Among the following , the species having square planar geometry for central atoms are
(i) `XeF_(4)`
(ii) `SF_(4)`
(ii) `|NiCl_(4)|^(2-)`
(iv)`|PtCl_(4)|^(2)`

Options

A. (i) and (iv)
B. (i) and (ii)
C. (ii) and (iii)
D. (iii) and (iv)

Answer

a

Explanation

`XeF_(4), sp^(1)d^(2)` hybridisation , shape is square plannar instead of octahedral due to presence of two lone pair of electrons on Xe atom, `SF_(4): SF_(4)` molecule showsexpected trigonal bipyramidal geometry tets distroted due to presence of a lone pair of electrons and its becomes or distroted tetrahedral or see-saw with the bond angles equal to `89^(@) and 177^(@)` insteated of the expected of `90^(@) and 180^(@)` respectively.

Experiments have, however, shown that 4 coordinates complexes of Pd(11) are diamagnetic `(n=0)`. thus it is `dsp^(2)` hybridisation which is involved in the complex