Question

Which operation best represents how to solve for the mass number of an atom?

Responses

A. protons + electrons
protons + electrons,

B. protons - neutrons
protons - neutrons,

C. protons + neutrons
protons + neutrons,

D. protons - neutrons

Answer 1

C. protons + neutrons

Step-by-step explanation:

The mass number is defined as the total number of protons and neutrons in an atom.