Give the name, the stereochemistry and the magnetic behaviour of the following complexes:

(i) [Co (NH3 )5 Cl]Cl2

(ii) K2 [Ni (CN) 4 ]​

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1 Answers

(i) [Co(NH3)5Cll]Cl2: Pentaamminechlorido cobalt (III) chloride

Co(III): [Ar] 3d6 4so —d2sp3 hybridisation leads to octahedral shape.

Magnetic behaviour: Diamagnetic.

(ii) K2[Ni(CN)4]: Potassium tetracyano nickelate (II)

Ni(II): [Ar] 3d8 4s° —dsp2 hybridisation leads to square planar shape.

Magnetic behaviour: Diamagnetic.

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