PhysicsNEET 2022Radioactivity and decay law

Nuclei

In the given nuclear reaction, the element X is:

$_{11}^{22} Na \to X + e^{+} + ν$

A. $_{12}^{22} Mg$
B. $_{11}^{23} Na$
C. $_{10}^{23} Ne$
D. $_{10}^{22} Ne$ ✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

More from this chapter in past papers

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The half-life of a radioactive substance is 20 minutes. In how much time does the…NEET 2023
A radioactive nucleus ^{A} {Z} {X} undergoes spontaneous decay in the sequence ^{A} {Z}…NEET 2021
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From Physics › Nuclei › Radioactivity and decay law — lectures, notes and every past question on it.

Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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