JEE Main 2021 — Coordination Compounds Question with Solution
From: JEE Main 2021 (Online) 25th February Evening Shift
Question
The spin only magnetic moment of a divalent ion in aqueous solution (atomic number 29) is _________ BM.
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Show full solutionCorrect answer: 1.73
Correct answer
1.73
Step-by-step explanation
Z = 29 [Cu] Cu2+ = [Ar] 3d9
Number of unpaired electron, n = 1
Spin only magnetic moment,
= 1.73 BM 2 BM
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This is a previous-year question from JEE Main 2021, covering the Coordination Compounds chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.