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In SF(4) molecule, the lone pair of elec...

In `SF_(4)` molecule, the lone pair of electrons occupies an equatorial position, rather than axial position, in the overal trigonal bipyramidal arrangement. Wy?

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Depending on the position occupied by the lone pair, two structures of `SF_(4)` are possible.

In (a), there are three lonepair-bond pair repulsion at `90^(@)` whereas in (b0 there are onl two lone pair-bond pair repulsions at `90^(@)`. hence (b) is more stable than (a). hence the lone pair occupies the equatorial position in `SF_(4)` molecule.
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