Assertion : The magnitude of charge density for a given ligand increases as the charge on the metal

                  ion increases.

Reason : NH3 is a weak field ligand towards Co2+ but acts as a strong field ligand towards Co3+.

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Concept Videos :-

#23 | VBT & CFT: I
#24 | VBT & CFT: II
#25 | VBT & CFT: III
#26 | Colour of Coordination Compounds

Concept Questions :-

VBT & CFT, Limitation /Hybridisation

(B) As metal ion charge increases the ligands are drawn closer to the metal ion because of its increased

     charge density. As the ligands move closer, they cause greater splitting of the d-orbital, there by

     producing a large t2g value.

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