Question:medium

Which of the following coordination entities is expected to exhibit the maximum value of magnetic moment (spin-only)? \[ (\mathrm{Mn}=25,\ \mathrm{Fe}=26,\ \mathrm{Co}=27) \]

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For octahedral complexes: Strong field ligands (CN$^-$, CO, NO$_2^-$) $\rightarrow$ low spin. Weak field ligands (F$^-$, H$_2$O, Cl$^-$) $\rightarrow$ high spin. More unpaired electrons imply a larger magnetic moment.

Updated On: Jun 17, 2026

$[\mathrm{Fe(CN)_6}]^{3-}$
$[\mathrm{CoF_6}]^{3-}$
$[\mathrm{Mn(CN)_6}]^{3-}$
$[\mathrm{Fe(H_2O)_6}]^{3+}$

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The Correct Option is D

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Which of the following coordination entities is expected to exhibit the maximum value of magnetic moment (spin-only)? \[ (\mathrm{Mn}=25,\ \mathrm{Fe}=26,\ \mathrm{Co}=27) \]

Show Hint

The Correct Option is D

Solution and Explanation

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