question_answer

A covalent molecule\[A{{B}_{3}}\]has pyramidal structure. The number of lone pair and bond pair of electrons in the molecule are respectively

A)  2 and 2                

B)  0 and 4

C)  3 and 1                

D)         1 and 3

Correct Answer: D

Solution :

The pyramidal structure of covalent molecule\[A{{B}_{3}}\]is as: No. of lone pair = 1 No. of bond pair = 3