Q.

A metal complex with a formula MCl4.3NH3 is involved in sp3d2 hybridisation. It upon reaction with excess of AgNO3 solution gives ‘x’ moles of AgCl. Consider ‘x’ is equal to the number of lone pairs of electron present in central atom of BrF5.

Then the number of geometrical isomers exhibited by the complex is _______.           [2025]


Ans.

(2)

BrF5 has one lone pair of electrons on central atom.

As the metal complex gives one mole of AgCl, it must have one Cl outside coordination sphere. So the complex is [M(NH3)3Cl3]Cl. This complex has two geometrical isomers.