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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