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Question

Chloro compound of vanadium has only spin magnetic moment of 1.73 BM. This vanadium chloride has the formula:


[Atomic number of V=23]

A
VCl2
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B
VCl4
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C
VCl3
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D
VCl5
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Solution

The correct option is C VCl4
Magnetic moment =n(n+2)
where n= number of unpaired electrons
n(n+2)=1.73
n=1
Electronic configuration of V is [Ar]4s23d3. For only one unpaired electron it has to be V4+.

Hence, the formula of vanadium chloride is VCl4.

Therefore, the correct option is B.

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