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Atomic Mass

The mass numb...

Question

The mass number of a nucleus is equal to the number of

A

electrons it contains

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B

protons it contains

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C

neutrons it contains

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D

nucleons it contains

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Solution

The correct option is D nucleons it contains
The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.
Nucleus are subatomic particles located in the nucleus of atoms. The (nucleons) total number of nucleons in the nucleus of an atom is called the mass number of that atom.

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