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

Asked by Vishal kumar | 1 year ago |  247

1 Answer

Solution :-

• Maximum number of electrons that can be accommodated in a shell is given by the formula: 2n2 , where n = 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

• The outermost orbit can be accommodated with 8 electrons at the maximum.

The electrons are not taken in unless the inner shells are filled which are filled step-wise, hence the highest element has K-2; L-8 ; M-8 distribution of electrons.

Answered by Shivani Kumari | 1 year ago

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