The sum of protons and neutrons

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Atomic Mass
B	Atomic Number
C	Isotopes
D	Quark

Explanation:

Detailed explanation-1: -The mass number is the sum of the number of protons and the number of neutrons in an atom.

There is 1 question to complete.