Geometry of ammonia molcule and the hybridisation of nitrogen involved in it are

Options

A. `sp^(3)`-hybridisation and tetrahedral geometry
B. `sp^(3)`-hybridisation and distorted tetrahedral geometry
C. `sp^(2)`- hybridisation and triangular geometry
D. None of the above

Answer

B

Explanation

Hybridisation `=(1)/(2)`[no. of `e^(-)` valence shell of central atom + no. of monovalent atoms + charge on anion - charge on cation ]
Shape of geometry of molecule depends on lone pair and bond pair of electrons present in it.
Hybridisation of N in `NH_(3)=(1)/(2)(5+3+0-0)=4 `
`:. sp^(3)`-hybridisation.
`:'` It has 3 bond pair and 1 lone pair of electrons, so it has distorted tetrahedral geometry.