. The shape of NH3 molecule is
B: trigonal planar
C: trigonal pyramidal
The correct answer is option C i.e shape of NH3 is trigonal pyramidal.
The shape of any molecule can be determined based on its hybridization and steric number.
The steric number of a molecule is calculated by the formula: (No.of valence e- of central atom + No.of monoatomic atoms around it) /2
So,the steric number of NH3 is = (5 + 3)/2 = 8/2=4
For steric number 4,hybridisation of NH3 is sp3.
Since there are 3 monoatomic atoms(H) and 1 lone pair of N, so the configuration is (3+1)
Correct Option is: (C)