# How many electrons can the 2nd shell accommodate?

Feb 10, 2017

And:- 8 ${e}^{-}$

#### Explanation:

We all know that electrons are filled in the shells by the formula
number of electrons$= 2 {n}^{2}$

And $n$ is the number of the shell you are looking for.
For eg: k =1st shell
L = 2nd shell
M = 3rd shell
So n = 1 for k
2 for L
3 for M
And so on.
So for n=2
We get number of electron = $2 \ast {2}^{2}$
$= 8$