Question

The maximum no. of electrons in a shell can be given by the formula $2n^2$. Calculate the maximum no. of electrons in the $2^{nd}$ shell.

• A. 2
• B. 4
• C. 8
• D. 16

Answer 1

The correct option is C 8

$2^{nd}$ shell represent L shell. By the formula $2n^2$ value of n is two.

Hence, $2n^2$ $=$ $2\times 2^2$ $=$ 8 electrons.