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The mass of an atom in atomic mass units...

The mass of an atom in atomic mass units (called the atom's istopic mass) si numerically close to the atom's

A

atomic number

B

mass number

C

atomic weight

D

atomicity

Text Solution

Verified by Experts

The correct Answer is:
B
Mass number is the sum of the number of protons and the number of neutrons in an atom.
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