JEE Main2014ChemistryCoordination CompoundsActual

A compound of vanadium chloride has spin only magnetic moment of 1 . 73 BM. Its formula is

Options

AVCl 2
BVCl 5
CVCl 4
DVCl 3

Correct answer

C. VCl 4

Step-by-step solution

Spin only Magnetic Moment μ = n n + 2  BM = 1 . 7 3 = 3 ∴  n = 1      (unpaired e - ) Electronic configuration of V = 1s 2 2s 2 2p 6 3s 2 3p 6 3d 3 4s 2 to get 1 unpaired electron V has to lose 4 electrons to form V 4 + . So, formula of chloride is VCl 4

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