Among the following complexes (K - P), which of the following are diamagnetic?

$K_{3} [Fe (CN)_{6}] (K), [Co (N H_{3})_{6}] C l_{3} (L),$

$N a_{3} [Co (oxalate)_{3}] (M), [Ni (H_{2} O)_{6}] C l_{2} (N),$

$K_{2} [Pt (CN)_{4}] (O)$ and $[Zn (H_{2} O)_{6}] (N O_{3})_{2} (P)$

Question

TestHub · Accepted Answer

Following compounds are diamagnetic as in them metal ion has no unpaired electron.

L: $[Co (N H_{3})_{6}] C l_{3}$

M: $N a_{3} [Co (Ox)_{3}]$

O: $K_{2} [Pt (CN)_{4}]$

P: $[Zn (H_{2} O)_{6}] (N O_{3})_{2}$

In L, M, O inner d-electrons get paired while in P Zn has already $3 d^{10}$ configuration.

In K and N there are 1 and 2 unpaired electrons respectively so they are paramagnetic.

Chemistry - Coordination Chemistry Question with Solution | TestHub

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