Question

what information does the atomic mass of an element provide?
o the number of isotopes
o the sum of electrons and protons in an atom
o the number of protons and neutrons in an atom
o the difference between the number of protons and electrons

Explanation:

Atomic mass is approximately sum of protons and neutrons as electrons have negligible mass compared to them.

Answer:

the number of protons and neutrons in an atom