1.

Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion.According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible.The VSEPR model consider double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of pi electrons.how ever, the lone pair creates the maximum repulsive effect. Which of the following does not represent the isostructural pair ?

Answer»

`SF_5^-` and `IF_5`
`CIO_2F_3` and `SOF_4`
`SeF_3^-` and `XeO_3`
None

Solution :(A)both square pyramidal having `sp^3d^2` HYBRIDISATION , (B)both TRIGONAL bipyramidal having `sp^3d` hybridisation, (C )both trigonal pyramidal having `sp^3` HYBRIDSATION.


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