Question

How many places are there for electrons in the second shell of an atom?

Answer 1

The second shell can hold up to eight electrons. 

Answer 2

Answer:

Eight electrons.

Explanation:

An atom is composed by shells, each shell can contain a limited number of electrons. The first one can contain two electrons. The second shell contains up to eight electrons. The third shell contains up to 18.

There's a formula to calculate the number of electrons:

$2(n^{2} )$