AIPMT PRELIMS2005Chemistry-Nuclear Chemistry
AIPMT PRELIMS 2005 Chemistry Isotopes, Isobars, and Isotones MCQ Question
Type: MCQ-conceptual-Easy-Class 11
The nuclei of which one of the following pairs of nuclei are isotones?
A
34Se₇₄, 31Ga₇₁
B
42Mo₉₂, 40Zr₉₂
C
38Sr₈₄, 38Sr₈₆
D
20Ca₄₀, 16S₃₂
Correct Answer
Option A
Detailed Explanation
Isotones are nuclei with the same number of neutrons. For 42Mo₉₂ and 40Zr₉₂, both have 50 neutrons, making them isotones.
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