Question

The pair of molecules in which one of the molecule has linear shape while another one has square based pyramid shape is :

• A. $[{Br}_3^{-},{PF}_5]$
• B. ${CO}_2{,NF}_3$
• C. ${SO}_2{,CIF}_5$
• D. $[l_3^{-},{Br}_5]$

Answer 1

The correct option is D $[l_3^{-},{Br}_5]$

$[{I_3}^{-},{Br}_5]$

${I_3}^{-}\to$

Hybridisation- $s{p}^{3}d$, consist of 2 bond pair and 3 lone pair.

$\Rightarrow$ Linear shape

$Br{F}_5\to$

Hybridisation- $s{p}^3{d}^2$, consist of 5 bond pair and 1 lone pair.

$\Rightarrow$ Square pyramidal shape