question_answer

Which of the following pair of molecules will have permanent dipole moment for both members:

A) \[{{\operatorname{NO}}_{2}} and C{{O}_{2}}\]   

B) \[{{\operatorname{NO}}_{2}} and {{O}_{3}}\]

C) \[{{\operatorname{SiF}}_{2}} and C{{O}_{2}}\]           

D) \[{{\operatorname{SiF}}_{4}} and N{{O}_{2}}\]  

Correct Answer: B

Solution :

Dipole moment = Product of magnitude of - ve or +ve charge q and distance d between the centres of +ve and -ve charges. \[\mu =q\times d\] Dipole moment of: While \[{{\operatorname{NO}}_{2}} and {{O}_{3}}\]are bent molecules with permanent dipole moment.