6. This question concerns polarity.
(a) Explain why hydrocarbons are generally considered non-polar.
(b) Sketch the structure of a hydrogen bond interaction between HF and water.
(c) Draw Lewis structures and determine whether the following molecules are polar or
not. Assume all heteronuclear bonds are polar. .
OCl
XeF
OSCl
2
2
2
(S atom central)
BF
PCl
3
3