Question

The species having T-shape is:

• A. $S{O}_3$
• B. $Br{F}_3$
• C. $Si{O}_3^{2-}$
• D. None of the above

Answer 1

The correct option is B $Br{F}_3$

a) $S{O}_3$
$\text{Steric Number (x)}=\frac{1}{2}(0+6-0+0)$.
$\text{Steric Number (x)}=3$.
Hybridisation =$s{p}^3$
0 lone pair
shape- trigonal planar

b) $Br{F}_3$
$\text{Steric Number (x)}=\frac{1}{2}(3+7-0+0)$.
$\text{Steric Number (x)}=5$.
Hybridisation =$s{p}^{3}d$
2 lone pair
shape- T-shaped molecule

c) $Si{O}_3^{2-}$
$\text{Steric Number (x)}=\frac{1}{2}(0+4-0+2)$.
$\text{Steric Number (x)}=3$.
Hybridisation =$s{p}^2$
0 lone pair
shape is trigonal planar