Hybridisation, shape and magnetic moment of K 3 [ C o C O 3 3 ] is

Hybridisation, shape and magnetic moment of K3[CoCO33] is
  1. d2sp3, octahedral, 4.9 BM
  2. sp3d2, octahedral, 4.9 BM
  3. dsp2, square planer, 4.9 BM
  4. sp3, tetrahedral, 4.9BM

Solution

In K3CoCO33, cobalt shows the +3 oxidation state i.e., (d6) ion. Hence, Co (+3) has four unpaired electrons so, it is paramagnetic.

The magnetic moment of Co(+3)

In K3CoCO33=nn+2 BM

=44+2 BM=4.9 BM

Where, n=number of unpaired electrons

CO32- is a weak field bidentate ligand, so 3CO32- ligands occupy six orbitals, thus it shows sp3 d2 hybridisation and octahedral in shape.

Asked in: MHT CET Full Test 12

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