Of the molecules below, only __________ is polar. CCl4 CH4 CH3Cl SiCl4 I2

Question

Of the molecules below, only __________ is polar.

	CCl4
	CH4
	CH3Cl
	SiCl4
	I2

Answer 1

Only CH₃Cl is polar. The Cl is highly electronegative and will pull electrons toward itself making it partially negative, leaving the carbon with a partial positive charge. This makes it polar. When there are 4 Cl atoms attached to the central atom (CCl₄ and SiCl₄), there is no net charge distribution because of the symmetry. Same principle applies to CH₄. Thus, these are non polar. I₂ is simply a linear molecule with no polarity.