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
Answer: Option B
Solution(By Examveda Team)
The mass number (A), is the total number of protons and neutrons ns) in an atomic nucleus so sometimes more than and sometimes equal to its atomic number, depends upon no of neutrons.This Question Belongs to General Knowledge >> Chemistry
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