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
Explanation
Correct Option
bVideo Explanation
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Discussions (4)
Dave333
4 years ago
The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.
