(a)
[image:4_image170.emf]
Hence, hybridisation=$sp^{3}$
In $NH_{3}$ N-atoms is $sp^{3}$ hybridised, but due to presence of a lone pair of electron on N-atom. It is pyramidal in shape.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.