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The mass number of a nucleus is - JAMB Chemistry 2021 Question


The mass number of a nucleus is?

A

Always less than its atomic number

B

The sum of the number of protons and neutrons present in the nucleus

C

Always more than the atomic weight

D

A fraction

correct option: b

The mass number is the sum of the number of protons and neutrons present in the nucleus of an atom.

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