# Problem: Explain why the boiling point of Br 2 (59 °C) is lower than that of iodine monochloride, ICl (97 °C), even thought they have nearly the same molar mass.a) Br2 is larger the ICl.b) ICl is ionic.c) The molar mass dependence of a liquid's boiling point is not an absolute rule, and it should not be applied to all compounds.d) It is impossible to say without further informations.e) The molar mass is not identical, the molar mass of Br 2 is only 159.80 g/mol compared to 162.35 g/mol for ICl. f) ICl is polar while Br2 is nonpolar.

###### Problem Details

Explain why the boiling point of Br 2 (59 °C) is lower than that of iodine monochloride, ICl (97 °C), even thought they have nearly the same molar mass.

a) Br2 is larger the ICl.

b) ICl is ionic.

c) The molar mass dependence of a liquid's boiling point is not an absolute rule, and it should not be applied to all compounds.

d) It is impossible to say without further informations.

e) The molar mass is not identical, the molar mass of Br 2 is only 159.80 g/mol compared to 162.35 g/mol for ICl.

f) ICl is polar while Br2 is nonpolar.

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