Question

what is the difference between atomic mass and mass number

Answer 1

Atomic mass is also known as atomic weight. Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. The mass number is a count of the total number of protons and neutrons in an atom's nucleus.

Answer 2

Atomic mass is total no of protons AND neutrons present in the nucleus whereas atomic no is the no of protons OR electrons present in the atom..............