The geometry of a molecule depends upon the repulsions between electron pairs present in the valance shell of the central atom. LP - LP repulsions are greater than LP-BP which are greater than BP - BP. A pi bond can not decide the geometry of a molecule because pi bond has no independent exsistance. Deviations in bond angle are due to the presence of lone pairs.
In which of the following orientation of electron pairs around the central atom is tetrahedral ?

Options

A. `NH_3`
B. `CH_(3)^(-)`
C. `CH_(3)^(+)`
D. Both `NH_3` and ` CH_(3)^(-)`

Answer

D