The structure of NH3 is triangular pyramid. In an excited NH3 molecule, the separation between nitrogen atom and hydrogen atom is l….

Q: The structure of NH3 is triangular pyramid. In an excited NH3 molecule, the separation between nitrogen atom and hydrogen atom is l and that of between two any hydrogen atoms is (3/2) l (only hydrogen concept). The force of interaction between nitrogen and hydrogen atoms is F0. Find the force applied on nitrogen to keep it stationary (assume that H-atoms are fixed).

(a) F0

(b) 3F0

(c) 3/2F0

(d) √3/2F0

Ans: (c)