1.

Among the following complexes (K-P) K_(3)[Fe(CN)_(6)] (K), [Co(NH_(3))_(6)]Cl_(3) (L), Na_(3)[Co("oxalate")_(3)] (M), [Ni(H_(2)O)_(6)]Cl_(2) (N), K_(2)[Pt(CN)_(4)](O) and [Zn(H_(2)O)_(6)](NO_(3))_(2)(P) the diamagnetic complexes are

Answer»

<P>K, L, M, N
K, M, O, P
L, M, O, P
L, M, N, O

Solution :K : `K_(3)[Fe(CN)_(6)],Fe^(3+)=3d^(5), d^(2)sp^(3)` HYBRIDIZATION, number of unpaired ELECTRONS = 1, paramagnetic.
L : `[Co(NH_(3))_(6)]Cl_(3), Co^(3+)=3d^(6), d^(2)sp^(3)` hybridization, number of unpaired electrons = 0, diamagnetic.


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