Question

of each subatomic particle.
8
o
oxygen
15.99
protons:
neutrons:
electrons:

Explanation:

Step1: Recall atomic number property

The atomic number is equal to the number of protons. For oxygen, the atomic number is 8, so the number of protons is 8.

Step2: Recall mass - number relationship

The mass number is approximately the sum of protons and neutrons. The mass number of oxygen is about 16 (from the rounded 15.99). Since protons = 8, neutrons = mass number - protons = 16 - 8 = 8.

Step3: Recall charge - neutrality

In a neutral atom, the number of electrons is equal to the number of protons. So electrons = 8.

Answer:

Protons: 8
Neutrons: 8
Electrons: 8