Which of the following species has tetrahedral geometry?
Which of the following species has tetrahedral geometry?
$\mathrm{BH}_4^{-}$
$\mathrm{NH}_2^{-}$
$\mathrm{CO}_3^{2-}$
$\mathrm{H}_3 \mathrm{O}^{+}$
Solution
The central $B$ atom in $\mathrm{BH}_4^{-}$undergoes $s p^3$ hybridisation, which results in tetrahedral geometry with 4 bond pairs and 0 lone pairs of electrons.
