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Q.

In a nitrosyl complex the odd electron on nitrogen of the coordinated nitrosyl is transferred to vacant (n-1)d sub-shell of the central metal. Hence the spin-only magnetic moment of the complex $K [(C r {(C N)}_{4} (N H_{3}) (N O)]$ assuming the metal ion to be in the strong field(in B.M), is

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answer is 2.83.

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Detailed Solution

$C r^{+ 2}$ no. of unpaired electrons is 2.

So, magnetic moment = $\sqrt{n (n + 2)} = \sqrt{2 (2 + 2)} = \sqrt{8}$

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In a nitrosyl complex the odd electron on nitrogen of the coordinated nitrosyl is transferred to vacant (n-1)d sub-shell of the central metal. Hence the spin-only magnetic moment of the complex K[(Cr(CN)4(NH3)(NO)] assuming the metal ion to be in the strong field(in B.M), is