Question

aTable 1 : Composition of Atoms of the First Eighteen Elements with
Electron Distribution in Various Shells ko learn karne ki trick​

Answer 1

here is ur answer

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Answer 2

Question :-

Summarise the rules for writing of distribution of electrons in various shells for the first eighteen elements.

Answer :-

The rules for writing of distribution of electrons in various shells for the first eighteen elements are:

(i) The maximum number of electrons present in a shell is given by the formula-2 n2

∵ n = orbit number i.e., 1, 2, 3

∵ Maximum number of electrons in different shells are:

K shell n = 1 2n2 => 2(1)2 = 2

L shell n = 2 2n2 => 2(2)2 = 8

M shell n = 3 2n2 => 2(3)2 = 18

N shell n = 4 2n2 => 2(4)2 = 32

(ii) The maximum number of electrons that can be accommodated in the outermost orbit is 8.

(iii) Electrons are not accommodated in a given shell unless the inner shells are filled. (Shells are filled step-wise).

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