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Magnetic Properties

The magnetic ...

Question

The magnetic moment of an ion in its +3 oxidation state is 3.85 BM. The number of unpaired electrons present in the ion is _____________.

A

1

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B

4

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C

3

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D

5

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Solution

The correct option is C 3
Given that magnetic moment is 3.85 BM

Magnetic moment = $\sqrt{n (n + 2)}$
where n is no. of unpaired electron.

$∴$ 3.85 = $\sqrt{n (n + 2)}$

No. of unpaired electron present in ion is 3.

Hence, the correct option is $C$

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