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JEE Main levelNumerical answerDifficulty 2 of 3cc061

What is the spin-only magnetic moment, in BM, of the complex ion in $K X_{3} [Fe (CN) X_{6}]$ ? Take CN- as strong field. Give the answer to two decimal places.

Numerical answer type, answer in BM, tolerance 0.01.

Answer: 1.73 BM

Fe is +3,

d^{5}

. CN- is strong field, so the configuration is

t_{2 g}^{5} e_{g}^{0}

with 1 unpaired electron.

μ = 1 \times 3 = 1.73 BM

.

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