what-is-the-primary-difference-between-atomic-mass-and-atomic-number

Question

What is the primary difference between atomic mass and atomic number?

Accepted Answer

Atomic mass is the average mass of all isotopes, while atomic number is the number of protons.

Answer

Atomic mass and atomic number are the same.

Answer

Atomic mass is always a whole number, while atomic number is not.

Answer

Atomic mass is the number of protons, while atomic number is the average mass of all isotopes.