Choose the statement which best explains why the boiling point of ICl (97 oC) is higher than the boiling point of Br2 (59 oC):
a. The molecular weight of ICl is 162.4, while that of Br2 is 159.8.
b. London dispersion forces are much stronger for ICl than for Br2.
c. ICl is an ionic compound, while Br2 is a molecular compound.
d. ICl is polar, while Br2 is nonpolar.
e. There is hydrogen bonding in ICl, but not in Br2.
Answer: D