संकरण sp3d2 and sp3d3

sp_3d_2

What shapes are associated with sp^(3)d and sp^(3)d^(2) hybrid orbitals?

The molencule which posses both sp^(3) and sp^(3)d^(2) hybridisation is

The maximum number of 180^(@) angle possible between X-M-X bond for compounds with sp^(3)d^(2) and sp^(3) d hybridisation respectively are

The hybrid states of phosphorous atoms in each PCl_(5) and PBr_(5) in gasesous phase are sp^(3)d . But, in solid PCl_(5) ,phosphorous shows sp^(3)d^(2) and sp^(3) hybrid states. While,P in PBr_(5) is in sp^(3) hybrid state. This is because:

Hybridisation (sp3d2, sp3d3) with examples

In the valence bond theory, hybridisation of orbitals is an integral part of bond formation.Hybridisation consists of mixing or linear combination of the "pure" atomic orbitals in such a way as to form new hybrid orbitals such as sp, sp^2, sp^3, sp^3d , sp^3d^2 etc. Now answer the following questions : Which one of the following molecular geometrices (i.e. shapes) is not possible for the sp^3d^3 hybridisation ?