Question

What is the maximum number of electrons that can be placed in the first shell/energy level?

A. 1

B. 8

C. 2

D. 18

Answer 1

D. 18

Step-by-step explanation:

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on.