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  4. How many types of F-S-F bonds are present in SF4 ?

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Q. How many types of F-S-F bonds are present in $SF_4$ ?

Odisha JEEOdisha JEE 2006Chemical Bonding and Molecular Structure

Solution:

E.C. of $S_{32}$ in its normal state =
$1s^2\, 2s^2 \,2p^6 \, 3s^2 \,3p_x^2 i\,3p_y^1\, 3p_z^1$
E.C. of $S_{32}$ in the excited state = $1s^22s^22p^63s^2$
$3p_x^1 \,, 3P_y\,{}^1,\,3p_z \,{}^1\, 3d^1$
It undergoes sp3d hybridization to give a trigonal bipyramidal arrangement in which one hybrid orbital occupies a lone pair and remaining four contain one electron each which is shared with those of F-atoms to form two types of F-S-F bonds'(axial and equatorial).