The mass number of a nucleus is?
Question
The mass number of a nucleus is?
Options
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
The correct answer is B.
Explanation:
mass number, is the sum of the numbers of protons and neutrons present in the nucleus of an atom.
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