Q10 / 155 · WBJEE 2017 · Chemistry
The shape of $XeF_{5}^{-}$ will be
- Asquare pyramid
- Btrigonal bipyramidal
- Correct answerCplanar
- Dpentagonal bipyramid
Solution
Shape of XeF $\rightarrow$
The Xe show $s p^{3} d^{3}$ -hybridisation in $XeF^{-}_{5}$, Thus, its geometry is Pentagonal-bipyramidal. But, number of electron pair $=\frac{8+5+1}{2}=7$ Number of bond pair $=5^{2},$ number of lone pair $=2$ A lot of electrons are present at axil position and all bonds are in same plane. Hence, the shape is planar.
The Xe show $s p^{3} d^{3}$ -hybridisation in $XeF^{-}_{5}$, Thus, its geometry is Pentagonal-bipyramidal. But, number of electron pair $=\frac{8+5+1}{2}=7$ Number of bond pair $=5^{2},$ number of lone pair $=2$ A lot of electrons are present at axil position and all bonds are in same plane. Hence, the shape is planar.Hence, the correct answer is option: 'C'.