Question

If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is_______.

Answer 1

Answer:

mass number = 18

Explanation:

The mass number is the total amount of protons and neutrons in an atom. Therefore, if there are 8 protons and 10 neutrons, the mass number is 18 (8 + 10 = 18).