Which of the following species has tetrahedral geometry?

Options

A. `BH_4^(-)`
B. `NH_2^(-)`
C. `CO_3^(2-)`
D. `H_3O^(+)`

Answer

A

Explanation

`BH_4^(-) rArr 4 `bond pairs + 0 lone pair `rArr sp^3` hybridised = tetrahedral geometry
`NH_2^(-) = V `- shape
`CO_3^(2-)`= triangular planar
`H_3O^(+)` = pyramidal