Atomic Structure - Result Question 71
47. An isotone of ${ } _{32}^{76} Ge$ is
(a) ${ } _{32}^{77} Ge$
(c) ${ } _{34}^{77} Se$
(b) ${ } _{33}^{77} As$
(d) ${ } _{34}^{78} Se$
$(1984,1 M)$
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Answer:
Correct Answer: 47. (b, d)
Solution:
- Isotones have same number of neutrons. ${ } _{32} Ge^{76},{ } _{33} As^{77}$ and ${ } _{34} Se^{78}$ have same number $(44)$ of neutrons, hence they are isotones.
BETA
