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Question

What is the maximum number of electrons that every shell can hold?

A
K= 2, L = 8, M = 18 and N = 32
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B
K= 2, L = 8, M = 8 and N = 8
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C
K= 2, L = 4, M = 8 and N = 16
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D
K= 2, L = 8, M = 16 and N = 32
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Solution

The correct option is A K= 2, L = 8, M = 18 and N = 32
A shell can have maximum 2n2 electrons.

For K-shell, n = 1
K= 2 x 12 = 2 ;
For L-shell, n = 2
L = 2 x 22 = 8 ;
For M-shell, n = 3
M = 2 x 32 = 18 ;
For N-shell, n = 4
N = 2 x 42 = 32

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