Question

How many types of F-S-F bonds are present in $S{F}_4$ ?

• A. 2
• B. 4
• C. 3
• D. 5

Answer 1

Answer: (A)

E.C. of $S_{32}$ in its normal state =
$1s^{2}2s^{2}2p^{6}3s^{2}3p_x^{2}i3p_y^{1}3p_z^1$
E.C. of $S_{32}$ in the excited state = $1s^{2}2s^{2}2p^{6}3s^2$
$3p_x^1,3P_y{}^1,3p_z{}^{1}3d^1$
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).