alleryStart learning →A gold nucleus holds 197 nucleons of which 79 are protons. Its neutron count is:
A128
B108
C138
D118
Answer & Solution
Correct answer: D. 118
1. Neutrons are the nucleons that are not protons.
2. Subtract 79 from 197.
3. So there are 118 neutrons.
_Source: syllabus Physics Part II, Class XII, Chapter 13, Nuclei._
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