Which of the following molecules has the maximum dipole moment?

3 2014 AIPMT Chemical Bonding and Molecular StructureDipole Moment Easy
Which of the following molecules has the maximum dipole moment?
A $CO_2$
B $CH_4$
C $NH_3$
D $NF_3$

Detailed Solution

$CO_2$ and $CH_4$ are symmetrical, so $\mu = 0$.
In $NH_3$ the bond dipoles add to the lone pair moment ($\mu$ = 1.4 D); in $NF_3$ they oppose it ($\mu$ = 0.23 D).
So $NH_3$ has the maximum dipole moment.

Dipole Moment in past papers

5 questions from this chapter have appeared across 5 exam years.

More questions from Dipole Moment

Keep going

Practise Dipole Moment All 5 questions This chapter in 2014 AIPMT