# The first shell of any atom can contain up to how many electrons?

Aug 27, 2016

#### Answer:

The first shell in atoms contain one orbital only that can hold up to two electrons.

#### Explanation:

The first shell in atoms contain one orbital only that can hold up to two electrons.

The first energy level (shell) has the quantum number $n = 1$.

Inside this shell you have the orbital $s$. This explains why all electron configuration of elements starts with $1 {s}^{2}$.