Coordination CompoundHard
Question
Which has maximum paramagnetic nature ?
Options
A.[Cu(H2O)4]2+
B.[Cu(NH3)4]2+
C.[Mn(H2O)6]2+
D.[Fe(CN)6]4-
Solution
Mn2+, 3d5 configuration has 5 unpaired electrons.
In (D) Fe2+ (3d6) has no unpaired electrons because of strong field ligand (CN-), all electrons are paired.
In (A) and (B) Cu2+(3d9) has one unpaired electron.
In (D) Fe2+ (3d6) has no unpaired electrons because of strong field ligand (CN-), all electrons are paired.
In (A) and (B) Cu2+(3d9) has one unpaired electron.
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