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Chemistry · d and f Block Elements

JEE Main 2024 — 4 April, Shift 2 — Question 73

A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM . The atomic number of the metal is

  1. Option A:

    25

  2. Option B:

    26

  3. Option C:

    22

  4. Option D:

    23

    Correct

Answer: D

Step-by-step solution

22Ti+2⇒[Ar]3 d2{ }_{22} \mathrm{Ti}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^{2}

23 V+2⇒[Ar]3 d3{ }_{23} \mathrm{~V}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^{3}

25Mn+2⇒[Ar]3 d5{ }_{25} \mathrm{Mn}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^{5}

26Fe+2⇒[Ar]3 d6{ }_{26} \mathrm{Fe}^{+2} \Rightarrow[\mathrm{Ar}] 3 \mathrm{~d}^{6}

Answer key and solution verified before publishing.

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Exam
JEE Main 2024
Paper
4 April, Shift 2
Subject
Chemistry
Chapter
d and f Block Elements
Topic
Introduction and Properties of Transition Elements

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