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JEE Main 202125 JulyEvening Shift
Exam
JEE Main
Year
2021
Date
25 July
Shift
Evening Shift
Subject
Chemistry
Chapter
Structure of Atom

JEE Main 2021 · 25 July · Evening Shift · Chemistry · Structure of Atom

The spin only magnetic moments (in BM) for free Ti ^ 3 + , V ^ 2 +...

The spin only magnetic moments (in BM) for free Ti3+,V2+{Ti}^{3 +}, {V}^{2 +} and Sc3+{Sc}^{3 +} ions respectively are

(At.No. ScSc : 21,Ti:22,V:2321, Ti: 22, V: 23 )

Options

  1. A3.87,1.73,03 . 87, 1 . 73, 0
  2. B1.73,3.87,01 . 73, 3 . 87, 0
  3. C1.73,0,3.871 . 73, 0, 3 . 87
  4. D0,3.87,1.730, 3 . 87, 1 . 73

Correct answer

B. 1.73,3.87,01 . 73, 3 . 87, 0

Step-by-step solution

μ=n(n+2)BM\mu = \sqrt{n ( n + 2 )}BM

Ti+3=[Ar]3d1n=1μ=1.73BM{Ti}^{+ 3} = [ Ar ] 3{d}^{1}n = 1\mu = 1 . 73BM

V+2=[Ar]3d3n=3μ=3.87BM{V}^{+ 2} = [ Ar ] 3{d}^{3}n = 3\mu = 3 . 87BM

Sc+3=[Ar]3d04s0n=0μ=0{Sc}^{+ 3} = [ Ar ] 3{d}^{0}4{s}^{0}n = 0\mu = 0

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