Nuclear Chemistry - Result Question 7
7. An isotope of $Ge _{32}^{76}$ is
(a) $\mathrm{Ge}_{32}^{77}$
(b) $\mathrm{As}_{33}^{77}$
(c) $\mathrm{Se}_{34}^{77}$
(d) $\mathrm{Se}_{34}^{78}$
(1984, 1M)
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Answer:
Correct Answer: 7. (a)
Solution:
- Isotopes have same atomic number $(Z)$ but different mass number $(A)$. Therefore, ${ } _{32} Ge^{76}$ and ${ } _{32} Ge^{77}$ are isotopes.
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