Polarity and IMF’s: Extra Practice
1. For each of the following molecules, do the following:
• Draw a correct Lewis structure
• Sketch the 3-D shape of the molecule
• Identify the polar bonds, and label them with a dipole arrow
• Determine whether the entire molecule is polar or nonpolar. If polar, identify the sides that are slightly
positive and negative.
a) SeO2
b) CH3F
(note: the electronegativity of H is slightly less than that of C.)
c) PF3
d) SO3
e) CH2F2
f) SiCl4
2. For each of the following pairs, predict which liquid would have the higher boiling point. Explain your answer in
terms of specific IMF’s.
a) SiCl4 or CCl4
b) HF or F2
c) HCN or N2
d) OF2 or CO2