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NEET levelSingle correct optionDifficulty 1 of 3cc110

The spin-only magnetic moment of $[Cr (H X_{2} O) X_{6}] X^{3 +}$ is

A2.83 BM
B3.87 BM
C4.90 BM
D1.73 BM

Answer: B

Cr X^{3 +}

is

d^{3}

with

t_{2 g}^{3}

, so

n = 3

.

μ = n (n + 2) = 15 = 3.87 BM

.

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