question_answer

Which of the following molecule in its valence shell has three bond pairs of electrons and one lone pair of electrons?

A) \[N{{H}_{3}}\]                                  

B) \[{{H}_{2}}O\]

C) \[B{{F}_{3}}\]                                    

D) \[C{{O}_{2}}\]

Correct Answer: A

Solution :

                \[N{{H}_{3}}\]molecule in its valence shell has three bond pairs of electrons and one lone pair of electrons. The shape of NH3 molecule is pyramidal due to the presence of one lone pair electron. It has\[s{{p}^{3}}\]hybridisation.