Question

Which of the following species has tetrahedral geometry?

• A. $B{H}_4{}^{-}$
• B. $N{H}_2{}^{-}$
• C. $C{O}_3^{2-}$
• D. $H_{3}O{}^{+}$

Answer 1

Answer: (A)

$B{H}_4{}^{-}$

$B{H}_4^{-}$ has $4$ bond pairs and $0$ lone pairs, so it has the tetrahedral geometry.

Correct option is $\left[A\right]$.