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Solution


Q.

The Spin only magnetic moment value of square planar complex [Pt(NH3)2Cl(NH2CH3)]Cl is ________ B.M. (Nearest integer) (Given atomic number for Pt = 78)              [2024]

Ans.

(0)

   In [Pt(NH3)2Cl(NH2CH3)]Cl, Pt is in +2 oxidation state.

    Pt2+=[Xe]544f145d8

    Metal ions with 4d8 or 5d8 configuration with coordination number 4 are always dsp2 hybridized and diamagnetic, irrespective of ligand. This is because Zeff for these 4d8 or 5d8 is high on account of poor shielding of d and/or f electrons, hence all ligands are sufficiently attracted towards the metal ion resulting large crystal field splitting which causes in pairing up of d8 electrons.