JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 10 April 2023, Shift 2, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

For a metal ion, the calculated magnetic moment is 4.90 BM. This metal ion has ____________ number of unpaired electrons.

Official answer

NTA final key.

Chapter: The d- and f-Block Elements
Topic: Quantum Numbers
Idea tested: Spin-Only Magnetic Moment

Same topic in other shifts

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.