Question

if both mass number and atomic mass is equal to the sum of protons and neutrons then what is the difference between them :(​

Answer 1

Answer:

Atomic number is the number of protons or electrons present in the atom.

While atomic mass is the sum of the number of protons and neutrons present in the atom.

example helium's atomic number is  2 while its atomic mass is 4.

Explanation:

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