Question

The maximum number of electrons that can be filled in the shell K, L, M, N are _______________ respectively.

• A. 2, 8, 16, 32
• B. 2, 8, 8, 32
• C. 2, 8, 8, 16
• D. 2, 8, 18, 32

Answer 1

The correct option is D 2, 8, 18, 32

The maximum number of electrons that can be accommodated in any shell is calculated using the formula $2n^2$, where $n$ is the shell number.
The maximum number of electrons that can be filled in the shell K, L, M, N are given below-
$$\begin{array}{ccc}\text{Shell}& \text{Value of n}& \text{Maximum no. of electrons}\\ \text{K}& \text{1}& 2\times 1^2\text{=2}\\ \text{L}& \text{2}& 2\times 2^2\text{=8}\\ \text{M}& \text{3}& 2\times 3^2\text{=18}\\ \text{N}& \text{4}& 2\times 4^2\text{=32}\end{array}$$