Of the molecules below, only __________ is polar. BF3 NH3 I2 CO2 CCI4

Question

Of the molecules below, only __________ is polar.

	BF3
	NH3
	I2
	CO2
	CCI4

Answer 1

NH3 is the polar molecule.

1. In BF3, you have a similar looking molecule as NH3 but there is no lone pair of electrons on B whereas there is on N in NH3.
2. I2 is symmetrical and linear so in non polar. I-I
3. CO2 is linear and non polar. O=C=O
4. CCl4 is symmetrical and non polar.