The species in which the cantral atom uses `sp^(2)` hybrid orbital in its bonding is:

Options

A. `PH_(3)`
B. `NH_(3)`
C. `CH_(3)^(+)`
D. `SbH_(3)`

Answer

C

Explanation

In `CH_(3)^(+)`, carbon atom is in `sp^(2)`-bridized state.
`H = (1)/(2) (V+X-C+A)`
(a) `PH_(3) = (1)/(2) (5+3) = 4 implies sp^(3)`
(b) `NH_(3) = (1)/(2) (5+3) = 4 implies sp^(3)`
(c) `CH_(3)^(+) = (1)/(2) (4+3-1) implies sp^(2)`
(d) `SbH_(3) = (1)/(2) (5+3) = 4 implies sp^(3)`