the maximum number of electrons that .......?

Question

What is the maximum number of electrons that can occupy the n = 2 shell?

a.4
b.8
c.18
d.32
e.50

is it a?

Answer 1

In order: 2-8-18-32-32-32-and so on to more 32's.

That leaves your answer as 8.

Get an "A"

Answer 2

Again, square it and double it: 8.