Question

1. the atomic mass of oxygen is 16. how many neutrons does oxygen have in its nucleus? 4 16 8 32

Explanation:

Step1: Recall oxygen's atomic number

Oxygen has an atomic number $Z=8$, meaning it has 8 protons.

Step2: Use neutron count formula

Neutron count = Atomic mass - Proton count
$\text{Neutrons} = 16 - 8 = 8$

Answer:

○ 8