The number of protons inside a nucleus is given by its:
AAtomic number
BAtomic weight
CAtomic radius
DAtomic volume
Answer & Solution
Correct answer: A. Atomic number
1. Each symbol in the notation counts something.
2. The count of protons has its own name.
3. That name is the atomic number.
_Source: syllabus Physics Part II, Class XII, Chapter 13, Nuclei._
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