Question

The atomic mass of an element is

A. a weighted average of the masses of an element’s isotopes.
B. twice the number of protons in one atom of the element.
C. the sum of the protons and neutrons in one atom of the element.
D. a ratio based on the mass of a carbon-12 atom.

Explain Please

Answer 1

Answer:C

Explanation: atomic mass is the total mass of a single atom. It is the sum of the the number of protons and neutrons in the atom.