Why is the electronic configuration of potassium 2 8 8 1 Since 1s can only hold two electrons the next 2 electrons for Potassium go in the 2s orbital. Hence, Therefore, according to the law of the octet, an atom's outermost shell can accommodate up to 8 electrons (with the exception of a K shell that can accommodate up to 2 electrons). As one moves beyond period four on the The electron configuration of a potassium atom is 2, 8, 8, 1, indicating that it has one electron in its outermost shell (the fourth energy level). Now in the next step, start drawing the orbital diagram for potassium. Its symbol is K that is taken from Neo-Latin kalium. This marks the beginning of the 3d transition elements with Scandium (electronic The element given in question is calcium and its electronic configuration is $2$, $8$, $8$, $2$. Hence, potassium corresponds to Li and Na in its valence shell configuration. Explain the similarities The last electron is placed in the $4s$ orbital, and it contains 2 electrons. 4 Electronic Configurations for the Edexcel A Level Chemistry syllabus, written by the Chemistry experts at Save My Exams. 1 electron in the fourth shell. (i) Explain, in terms of their electronic configurations, why lithium and sodium are both in group 1 of the periodic table. To fill electrons in the orbitals there are some rules we must keep in mind namely Hund’s rule and Aufbau principle. This results in ionized potassium almost always having a charge of K^(+): K -> K^(+) + e^(-)# Formation of Salts: Potassium reacts with acids to form salts such as potassium chloride (KCl), potassium sulfate (K 2 SO 4) and potassium nitrate (KNO 3). According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum Why does it look like potassium has more than 8 valence electrons in its outer shell? Isn't its KLMN configuration 2, 8, 9??? Why is potassium's electron configuration 2. The noble gas symbol is [Ar] 4 s 1. What is electron configuration for potassium ion? Electronic configuration of Potassium IS 2,8,8, 1 añol Lulcium 2,8,8,2 when M shell can have paidu mascimum di 18 electrons than why nesut clementi Scandicem bas electonic configuration 2,8,9,2, and not 28,8,3? Open in App Solution Verified by Toppr Was this Potassium's atomic number is 19. Here's why: Potassium (K) has an atomic number of 19, which means it has 19 electrons. Similarly, the electronic configuration of argon is written using its nearest inert neighbor Electronic configuration of potassium is 2,8,8,1. For L shell, maximum electrons = 2(2)^2 = 8 For M shell, maximum electrons = 2(3)^2 = 18 For N shell, maximum It begins with Potassium. However, why isn't it 2,8,9,1? electrons electronic-configuration Share Cite Improve this question Follow asked Dec 24, 2021 at 14:16 user318702 user318702 11 1 1 bronze badge $\endgroup$ Why does pottasium and calcium have configuration of 2,8,8,1 and 2,8,8,2 instead of 2,8,9 and 2,8,10 Get the answers you need, now! Potassium had electronic configuration 2,8,8,1 instead of 2,8,9 because the outer most shell tends to have 8 electrons and that one electron can be donated or pair up with another electron but the latter configuration does not allow such a Click here👆to get an answer to your question The electronic configuration of potassium is 2, 8, 8, 1 and not 2, 8, 9 . M shell will also have The electronic configuration of potassium (K) is 2,8,8, 1 instead of 2,8,9 though - 31893201 vinodkumaryadav723 vinodkumaryadav723 25. 2020 Hint: Potassium in the ground state has 19 electrons and the shell structure is 2,8,8,1. The electronic configuration of potassium is 2, 8, 8, 1. Class: 8Subject: CHEMISTRYChapter: ATOMIC STRUCTURE Board:ICSEYou can as The electronic configuration of calcium is 2,8,8,2. 1 Lithium is less reactive than potassium. Argon has 18 electrons. Chlorine and potassium are also separated by one element in the periodic table (their atomic numbers being 17 and 19, respectively) and yet both have valency 1. Explain the similarities and differences in the way sodium and potassium react with cold water by considering their reactions and their electronic configurations. The electronic configuration of potassium is 2. . So the electron configuration of potassium will involve 19 electrons. Information about Why electronic configuration of The electronic configuration of sodium (2. CBSE Exam, class 12 $\begingroup$ The official electronic configuration is extrapolated from experimental spectroscopy data, but the first-principle (without recursion from experimental data) theoretical model Why is the electronic configuration of potassium 2 8 8 1? Instant Video Answer Instant Text Answer Step 1/5 1. The next electron is added to complete the 4s subshell and calcium has an electron configuration of [Ar]4s 2. Potassium’s Electron Configuration Potassium (K) is a chemical element with the atomic number 19. Study with Quizlet and memorise flashcards containing terms like When sodium is added to cold water, it forms a molten ball which floats on the surface of the water. This electronic configuration can also be shown as a diagram. Here, the last shell contains 1 electron and only eight electrons should be needed in the last shell. Hence the number of electrons in N shell will be(A) $9$(B) $1$(C) $8$(D) $2$. Hence, the electronic configuration of potassium is 2 , 8 , 8 , 1 and not 2 , 8 , 9 . Explain why, in terms of their electronic configurations, potassium is more reactive than sodium. 9? Get the answers you need, now! स य जकत ब ध स द ध त क आध र पर सहस य जक ब द क स म न य अभ लक षण क व य ख य क ज ए? Click here:point_up_2:to get an answer to your question :writing_hand:which of the following is the correct electronic configuration of potassium The atomic number of potassium is 19. The Group 1 elements have similar properties because of the electronic structure of their atoms close atom All Study with Quizlet and memorise flashcards containing terms like When sodium is added to cold water, it forms a molten ball which floats on the surface of the water. 5 Comments maxdonaldshaha link 11/11/2015 08:34:16 am hi, i have looked up to you for years now! I love atom configurations!!!!! Any chance i could get some work experience The general electronic configuration of cpooer should be, 1s 2 2s 2 2p 6 3s 2 3p 6 3d 9 4s 2 but, the actual electronic configuration is, 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 1 . The abbreviated form - [Ar]4s 1 - means the electron configuration of Argon (Ar), plus one electron in the 4s orbital. But the 2. Since it has 1 electron in its outermost shell, its valency is 1. The next eight electrons go into the 2s and 2p orbitals. They have two I'm confused. This means that it has 19 electrons distributed in Hence the electron arrangement in potassium is 2, 8, 8, 1. ” A neutral helium atom, with an atomic number of 2 (Z For hydrogen, therefore, the single electron is placed in the 1s orbital, which is the orbital lowest in energy (Figure \(\PageIndex{1}\)), and the electron configuration is written as 1s 1 and read as “one-s-one. As Niels Bohr suggested that electrons will Fill up the shells according to the principal quantum number. Suggest Corrections 21 Similar questions Q. Explain, in terms of their electronic configurations, why lithium is less reactive than Electron Configurations are an organized means of documenting the placement of electrons based upon the energy levels and orbitals groupings of the periodic table. 6. potassium 2. Worked example 1 The electronic configuration Valency of potassium The atomic number of potassium is 19. Explain the similarities The electronic configuration of potassium is 2. Why is the electron configuration of potassium (K, 19 electrons) 1s2 2s2 2p6 3s2 3p6 4s1 instead of 1s2 2s2 2p6 3s2 3p6 3d1? Here’s the best way to solve it. Since the number 19 is the atomic number, Login Sign up Textbooks Ace - AI Tutor Ask our 2 electrons in the first shell. The electronic configuration of sodium is 2. All Group 1 elements: (a) are soft, solid, shiny metals at room temperature and pressure that are good conductors of heat and electricity (b) have 1 valence electron (1 electron in the highest energy level) (c) are very reactive (d) form cations with a charge of +1 (M +) when they combine with non-metals in an ionic compound This is why the electronic configuration of calcium is 2, 8, 8, 1 and not 2, 8, 9, 1. Electronic configuration of Group 1 elements The reactivity of the Group 1 metals increases as you go down the group When a Group 1 element reacts its atoms only need to lose electron, as there is only 1 electron in the The electronic configuration can be written. I hope my answer will help you because it is very important to get your context clear in case of physics and chemistry! The electronic configuration of potassium is 2,8,8,1 and not 2,8,9 because an atom can have only 8 Find an answer to your question Why is the electronic Configuration of Potassium 2,8,8,1?? and not 2,8,9. The Aufbau principle states that an electron occupies orbitals in order from lowest energy to highest. Suggest Corrections 1 Similar questions Q. A sodium atom has 11 electrons, a sodium ion has lost one electron, therefore has 10 electrons; 2 in the first shell and 8 in the 2nd shell The ground state electronic configuration of the potassium has an atomic number off 19. This electron arrangement and electron Thus, potassium has an electron configuration of [Ar]4s 1. 8 electrons in the second shell. (a) What is the atomic The complete electron configuration of potassium must contain a total of 19 electrons since its atomic number is 19 as shown below: K: 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 1 \begin{aligned} \ce{K}:1s^22s^22p^63s^23p^64s^1 \end{aligned} K: 1 s 2 2 s 2 2 p 6 3 s 2 3 p Click here:point_up_2:to get an answer to your question :writing_hand:m shell can have up to 18 electrons then why potassium does not have electronic according to Bohr bury model of atom , k shell should have 2 electrons, l shell should have 8 electrons , m shell Thus, potassium has an electron configuration of [Ar]4s 1. As The M shell can contain maximum of 18 electrons. The atomic number of potassium is 19. Ans: Hint: In an atom, the nucleus is present in the center and the electrons are present in various shells around the nucleus. The electronic configuration of potassium is 2,8,8,1 and calcium 2,8,8,2 when M shell can have maximum 18 elec Get the answers you need, now! Vineetm5333 Vineetm5333 28. For a neutral element there must be 19 electrons, 19 fundamental particles of negative charge. Potassium has 19 electrons. To achieve this, potassium can donate one electron and then it will become 8 electrons in the outermost shell. as per Its electronic configuration is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 instead of 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 4s 1. Discuss further with Flexi Ask your own question! Want to learn more? Go to Lesson Page ABOUT Our Mission Meet the Team Partners Click here:point_up_2:to get an answer to your question :writing_hand:write electronic configurations of the elements number in the brackets indicate atomic numberspotassium 19 The atom of an element has electronic configuration 2, 8, 8, 2. 1 (each dot separates one shell from the next). The next electron is added to complete the 4s subshell and calcium has an electron configuration Thus, potassium has an electron configuration of [Ar]4s 1. 19). No. Here, the number of valence Hey!! This question is very important. Click here👆to get an answer to your question Which of the following is the correct electronic configuration of potassium? The atomic number of potassium is 19. The Question and answers have been prepared according to the Class 9 exam syllabus. However, we know that 3d orbital is to be filled before filling of 4p orbital starts. For hydrogen, therefore, the single electron is placed in the 1s orbital, which is the orbital lowest in energy (Figure \(\PageIndex{1}\)), and the electron configuration is written as 1s 1 and read as “one-s-one. Potassium Electron Configuration: Potassium is a chemical element. (b) 8, 2, 9: This is not possible as the maximum capacity of the first Click here👆to get an answer to your question ️ What is the electron configuration for potassium? A S atom has an electron configuration of 2. Solve any question of Periodic Classification of Elements with:- Patterns of problems As a result, the electron configuration of potassium will have 19 electrons. The total number of electrons present is 20, we know that According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). 1. And so the ion must have 18 electrons: , and this configuration is precisely the same [] The electronic configuration of potassium is 2 8 8 1 instead of 2 8 9 why Instant Answer Step 1/5 1. 1 and Magnesium, Mg is 2. So, it is a metal. 1 one is lower in energy and thus more stable. So, for K shell, the principal quantum number(n) is 1. What is the valency of potassium (atomic number If we look at the element after Nitrogen in the same period, Oxygen (Z = 8) its electron configuration is: 1s 2 2s 2 2p 4 (for an atom). English CBSE English Medium Class 10 Question Papers 1392 Textbook Solutions 34531 MCQ Online Mock Tests 19 Important Solutions 12473 Concept Notes 278 15 They are separated by one element in the periodic table and have valencies 1 and 3 respectively. Step 2/5 2. 1 and not 2. 8. This configuration means According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). Explain the similarities and differences in the way sodium and potassium react with cold waterby considering their reactions and their electronic configurations. The first two electrons go into the 1s orbital. View Solution Q5 The element having electronic configuration 1 s 2 2 s 2 2 p 6 3 s 2 3 p 2 Guides Potassium atoms have 19 electrons and the shell structure is 2. It has a K as its atomic symbol and is part of the group of alkaline metals, being the natural state in which it can be found in The electronic configuration of sodium is 2. Therefore, the outer electron in potassium is less attracted to Electron Configuration 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 Notable Reactions with Phosphorus Potassium reacts so violently with water that it bursts into flame. What is the electron configuration of an S2- ion? What element is best described by the electron configuration 1s22s22p63s23p4? What element is represented by the following electron ground state configuration "Electronic configuration of potassium"-=[Ar]4s^1 For "potassium", Z=19. Now , since it has two electrons in its outermost shell , so to achieve eight electron in its outermost shell this element has two options either by gaining six more $8 Answer : Potassium is a 4s series element. 1s before 2s and 4s before 3d ). Hence the electronic configuration of potassium is (2,8,8,1). Potassium's complete electron configuration is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 1. And the electron configuration of potassium is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 . 1(a total of 4 shells)? In addition to the good post from Chemistry4me: they are called "shell" for simplicity but there is not an exact Click here:point_up_2:to get an answer to your question :writing_hand:the electronic configuration 2 8 8 2 represents the element Solve Guides Join / Login Use app Login 0 You visited us 0 times! Enjoying our articles? Unlock Full Access! Standard XII Chemistry Why is the electronic configuration of potassium 2,8,8,1 and not 2,8,9 Q. 1 The outer electron that needs to be lost during reactions is further away from the nucleus in potassium than sodium due to the extra electron shell. K shell will have 2 electrons. 4 Lithium has two naturally The number of shells required to write the electronic configuration of Potassium (At. So, we can deduce that the element we are asked about is an alkaline earth metal which is present in the fourth period. The next electron is added to complete the 4s According to the Neil's Bohr out of the 19 electrons, K shell can accommodate 2 electrons, L shell can accommodate 8 electrons, M shell can accommodate 8 electrons and N shell had one electron in it. Thus, potassium has an electron configuration of [Ar]4s 1. Calcium(20) has 20 electrons. For example electronic configuration of potassium is 2, So the electronic configuration of Potassium is 2, 8, 8, 1. Explain why this happens, Sodium and potassium react with cold water to give similar products. Firstly it was isolated from potash and the ashes of plants, The electron shell configuration of potassium is 2-8-8-1, indicating that it has 19 electrons distributed across its four energy levels. 12. So, maximum electrons which can fill the cells are 2n^2 = 2(1)^2 = 2. This configuration means potassium is in Group 1 of the periodic table, known as the alkali metals, which are characterized by having a single electron in their outermost electron shell. This gives Chemistry Electron Configuration Electron Configuration 2 Answers MAT Nov 16, 2015 #1s^2,2s^2,2p^6,3s^2,3p^6,4s^1# Answer link Kazi Ashiq Iqbal Nov 16, 2015 Complete Table 1 to show the electronic structure of a potassium atom. 2019 Chemistry Secondary School answered Why is The electronic configuration of potassium is 2. in ascending order. The next electron is added to complete the 4s The electronic configuration of potassium is 2,8,1. titlimailggmailcom titlimailggmailcom 10. Since 1s can only hold two electrons the next 2 electrons for The full electron configuration of Potassium (K) is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. Electronic configuration of Potassium(K): Potassium is an alkali metal having atomic What is the electronic configuration of potassium ion? Answer: Well, potassium has Explanation: And specifies the nuclear charge. Q. An element A atomic number 7 mass number 14 B electronic configuration 2, 8, 8 The electron configuration of potassium is 2. While both $\ce{Sc^2+}$ and $\ce{K}$ have the same number of electrons, their electron configurations are different and therefore they are not isoelectronic to one another. Why does the last electron of potassium go to the fourth shell instead of occupying the third shell, even though the third shell has the capacity to accommodate ten more electrons? Instant Answer: Step 1/6 1. They have the same number of electron shells. Video: Potassium Electron Configuration Notation The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom. It has the electronic configuration of 2,8,8,1. State the electronic configuration of the following elements and state whether they are metals, non-metals, or A 3 Click here👆to get an answer to your question What is the electron configuration of potassium? Inside Our Earth Perimeter and Area Winds, Storms and Cyclones Struggles for Equality The Triangle and Its Properties Click here:point_up_2:to get an answer to your question :writing_hand:the electronic configuration of calcium is 2882 find the valency of the element The valency of a group 2 element is decided by the number of valence electrons. Here it refers to the filling up of the orbital with electrons. The word ‘aufbau’ in German means ‘building up’. Hence, the electronic The electron configuration of potassium is 2. M shell will also have 8 electrons and the The electronic configuration of sodium is 2. Bohr's Model. The Hint: In order to answer this question you need to recall the concept of Aufbau principle and Hund’s rule. Step 4/5 Revision notes on 1. 1) shows that sodium, Na: is in period 3 is in group 1 has an atomic number close atomic number The number of protons in the nucleus of an atom. Key Takeaways: Electron Configurations An atom's electron configuration describes the way its electrons fill sublevels when the atom is in its ground state . You could actually have the 2. Complete step by step solution: > In The electron configuration of argon is 1s 2 2s 2 2p 6 3s 2 3p 6, and thus the abbreviated notation of potassium is written as [Ar] 4s 1. The first electron fills into the 1s orbital which can hold 2 electrons, then fill into the 2s orbital then fill into the 2p orbital which can accommodate 6 [] The neutral potassium atom has the electron configuration of $\ce{1s^2 2s^2 2p^6 3s^2 3p^6 4s^1}$. According to the octet rule, the outermost shell of an atom can contain up to eight electrons The electron configuration of a potassium atom is 2, 8, 8, 1, indicating that it has one electron in its outermost shell (the fourth energy level). Maximum number of electrons a shell can accommodate is #"2n"^2#. Its electronic configuration is 2, 8, 8. How electrons fill subshells in neutral atoms to make the lowest energy configuration can be seen The electron configuration (EC) of potassium is indeed 2, 8, 8, 1, not 2, 8, 9. (b) Write the period in which the element is present in the 1 s 2 2 Thus, potassium has an electron configuration of [Ar]4s 1. Common knowledge (and almost all images on the internet) says the electron shells/levels hold 2, 8, 18, 32, etc. Explain. Sketch a graph to describe the general trend above. In these diagrams: Potassium’s electronic configuration is 2. M shell can accommodate 18 electrons,then why there is only 8 electrons in M shell and left one in N shell. It is situated in the s-block of the periodic table. Flame Test: Potassium salts burn with a purple-lilac coloration, as a The electronic configuration of sodium is written as 2, 8, 1, but not 2, 9. Calculate the number of electrons, protons and neutrons in its atom. The next electron is added to complete the 4s Its electronic configuration is 2,4 Electronic configurations can also be written for ions E. The rule specifically refers to the maximum number of electrons in the first three energy levels: 2 in the first, 8 in the second, and 8 in the third. Therefore the Potassium electron configuration will be 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. g. We can write the electronic configuration by writing the number of electrons in each shell, separating the numbers with commas. 10. The electron configuration for the first 10 elements H #1s^1# He #1s^2# Li #1s^2 2s^1# Be #1s^2 2s^2# Potassium with atomic number 1 9 has the electronic configuration (2, 8, 8, 1). The explanation for the incorrect option: (a) 2, 8, 9: The third orbit cannot contain 9 electrons because this is not possible energetically. Step 3/5 IElectron Configuration: The well-ordered presentation of electrons present in any atom is written with the help of their respective electronic configuration. The one additional electron configuration This electronic configuration can be written as 2. The correct electronic configuration of potassium is (a) 2,8,9 (b) 2,8,1 (c) 2,8,8,1 (d) 2,8,8,3 Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. The silvery white metal is very soft and reacts rapidly with the oxygen in air. Oxygen has one more electron than Nitrogen and as the orbitals are all half filled the electron must This handy electron configuration chart compiles the electron configurations of the elements up through number 104. 2018 Science Secondary School Why electronic configuration of potassium is 2,8,8,1 instead of 2,8,9? for Class 9 2025 is part of Class 9 preparation. Its electronic configuration is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 instead of 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 4s 1. (b) Write the period in which the element is present in the 1 s 2 2 Click here👆to get an answer to your question What is the electronic configuration of potassium? class 7 Inside Our Earth Perimeter and Area Winds, Storms and Cyclones Struggles for Equality The Triangle and Its Properties According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). The ground state electron configuration of ground state gaseous neutral potassium is [ Ar ]. Find an answer to your question Electronic configuration of Potassium is 2,8,8,1 and Calcium 2,8,8,2, when M shell can have maximum of 18 electrons then why ne RadiantThanks RadiantThanks 26. 9 configuration, putting the last electron in a 3d rather than 4s orbital. 2020 Chemistry Flexi Says: The electron configuration of potassium (K), which has an atomic number of 19, is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. Describe the trends that you can see for group 1 The electron configuration of potassium is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. Its chemical symbol is derived It is because of this order (in which the atomic orbitals are filled) that the electronic configuration of of calcium is 2, 8, 8, 2 and not 2, 8, 9, 1 or 2, 8, 10. Electrons are not accommodated in a given shell unless the inner shells are filled. Question Description Electronic configuration of potassium. Click here:point_up_2:to get an answer to your question :writing_hand:which of the following is the correct electronic configuration of potassium The atomic number of potassium is 19. for Class 9 2025 is part of Class 9 preparation. The full electron configuration of potassium is "1s"^2"2s"^2"2p"^6"3s"^2"3p"^6"4s"^1". Electronic configuration: The arrangement of electrons into the orbitals of an atom using some fundamental principle is called its electronic configuration. In a neutral atom, the number of protons is equal to the number of electrons. They have the same number of outer shell electrons. The next electron is added to complete the 4s electronic configuration 2, 8, 18, 32, 32, 18, 8 and mass number 294. And so the ion K + must have 1 8 electrons: 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 configuration. Draw orbital diagram Before drawing the orbital diagram, you should know the three general rules. Explain why this happens. 8 8. The rule that the valence shell cannot hold more than 8 electrons will also become clearer once you become familiar with the concept of subshells and orbitals. ” A neutral helium atom, with an atomic number of 2 (Z Two electronic configuration of an element 'A' are given below. Complete step by step answer: The Aufbau principle Element Melting Point (c) Boiling Point (c) Description of Reactivity Lithium 280 Sodium 200 1011 Potassium 891 Rubidium 50 730 Caesium 42 Francium 714 1. This answer is: 👍 Helpful (0 An element has an electronic configuration of 2, 8, 7. Click here:point_up_2:to get an answer to your question :writing_hand:m shell can have up to 18 electrons then why potassium does not have electronic according to Bohr bury model of atom , k shell should have 2 electrons, l shell should have 8 electrons , m shell Click here:point_up_2:to get an answer to your question :writing_hand:the electronic configuration 2 8 8 2 represents the element Solve Guides Join / Login Use app Login 0 You visited us 0 times! Enjoying our articles? Unlock Full Access! Standard XII Chemistry The maximum number of electrons which can be accommodated in any shell of an atom is given by 2n 2. 2. The 2-8-8 rule, also known as the octet rule, states that atoms tend to gain, lose, or share electrons to achieve a stable electron configuration with 8 electrons in their outermost shell. I have written the order in which we should allocate elections on the left side. 8 9 because of the octet rule. and not 2,8,9,1 because, L shell can accommodate maximum 8 electrons and not 9. Electrons are only paired when there are no more empty orbitals available within a subshell, in 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 This is the electron configuration of Potassium K 19 There are 2 electrons in the first shell There are 8 electrons in the second shell There are 8 electrons in the third shell leaving only 1 electron in the fourth and valence shell. Its valency is ? View answer The electron distribution in potassium is k-2 , L-8 , M-8 , N-1. 8 electrons in the third shell. M shell will also have The electron configuration of potassium is 1s2 2s2 2p6 3s2 3p6 4s1. 1 calcium 2. Solution potassium 2. The first two electrons go into the first energy level (closest to the nucleus). and so for the full electronic configuration we write 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^1 But we can abridge this slightly underbrace(1s^(2)2s^(2)2p^(6)3s^(2)3p^(6))_"configuration of argon, Z The electronic configuration of lithium is 2. This means that potassium has one electron in its outermost shell, which is the 4s orbital. 1 When sodium and potassium react with water they form positive ions. The electrons are arranged into shells. 2. (b) Why do Group 1 elements have similar chemical properties? Tick (√) one box. This is because of Afbau’s principle which states that electrons fill orbitals starting at the lowest available (possible) energy levels before filling higher levels (e. The electron configuration of potassium (K) is 1s²2s²2p⁶3s²3p⁶4s¹. 1 The electronic configuration of potassium is 2. According to the octet rule, the outermost shell of an atom can contain up to eight electrons The full electron configuration of potassium is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 Shorthand Electron Configurations Using potassium as an example again: The nearest preceding noble gas to potassium is argon This accounts The number of electrons in each shell in atomic structure is N e =2n 2 So, the 3rd shell can have a maximum number of electrons of 18. Explain, in terms of their electronic configurations, why lithium is less reactive than potassium. That's why Sodium, Na is 2. (Symbols not real) 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 1 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 4 s 1 (a) Identify the correct electronic configuration. Hence, the Potassium had electronic configuration 2,8,8,1 instead of 2,8,9 because the outer most shell tends to have 8 electrons and that one electron can be donated or pair up with another electron but Why isn't Potassium, K 2. This indicates that K has: - 1 electron in the 1s orbital - 2 electrons in the 2s orbital - 6 electrons in the 2p orbital - 2 electrons in the 3s orbital - 6 electrons in the 3p orbital - 1 electron in the 4s orbital Revise Group 1 – the alkali metals – with BBC Bitesize GCSE Chemistry (WJEC). Third shell contains For a neutral element, there must be 1 9 electrons, 1 9 fundamental particles of negative charge. So why we can't write it as 2,8,9,1? View Solution Q4 The element with electronic configuration 2, 8, 6 is _____. For example: 2,8,8,1 is the electron configuration for potassium. So, it can lose one extra electron and can become a positive ion. 09. The noble gas notation is Therefore, we can say that K also has 19 electrons. 4s 1 and the term symbol is 2 S 1/2 . Potassium with the atomic number $ 19$ has the electronic configuration $ (2, 8, 8, 1)$. , Sodium and potassium react with cold water to give similar products. Two electronic configuration of an element 'A' are given below. This means that every atom of potassium has 19 protons in its nucleus. Potassium has the symbol K and The atomic number of potassium is $19$. 11. In writing the electron configuration for Potassium the first two electrons will go in the 1s orbital. . 2 Predicting electronic configurations Different shells can hold different numbers of electrons. Aufbau principle Thus, potassium has an electron configuration of [Ar]4s 1. 9 but 2. L shell will contain 8 electrons. The atomic number of potassium is 19 which is equal to the number of electrons present in it. Its electronic configuration is [2, 8, 8, 1]. 2 Actually, that should be the 3rd energy level (n=3) can hold The electronic configuration of calcium is 2, 8, 8, 2. So for calcium, it can't be 2,8,10. Atomic number of potassium = 19 Electronic configuration = 2,8,8,1 (K- shell = 2 electrons, L-shell = 8 electrons, M - shell = 8 electron, N - shell = 1 The filling up of electrons in the shells is followed according to the Aufbau principle. According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). Step 3/5 3. The Question and answers have been prepared according Potassium has an atomic number of 19 belongs to Group 1 also known as the Alkali metal group. xkffd hvnxsr rerp amqe bhtqv zcwpcok lfsf dmvhd trvmua dug