What kind of attractive forces must be overcome in order to (a) melt ice, (b) bo

Question

What kind of attractive forces must be overcome in order to (a) melt ice, (b) boil molecular bromine, (c) melt solid iodine, and (d) dissociate F2 into F atoms?

Not only do I need the answer to this question but I would like to inquire a little further so that I can answer these questions for myself.  I know that these answers require you to know the atomic mass or the amount of electrons that the molecule or atom posseses as well as the type of bond that these molecules will share.  How do you figure this out.  How do you know what the weight or the mass is of the atom, molecule and how would you know how much energy is required to break the bonds or melt/ freeze certain molecules.  IF I know where to look I can figure this stuff out on my own.

Explanation / Answer

What kind of attractive forces must be overcome in order to (a) melt ice; (b) boil molecular

bromine; (c) melt solid iodine; and (d) dissociate F2 into F atoms?

(a) Water has O?H bonds. Therefore, water molecules can form hydrogen bonds. The attractive

forces that must be overcome are hydrogen bonding and dispersion forces.

(b) Bromine (Br2) molecules are nonpolar. Only dispersion forces must be overcome.

(c) Iodine (I2) molecules are nonpolar. Only dispersion forces must be overcome.

(d) In this case, the F?F bond must be broken. This is an intramolecular force between two F

atoms, not an intermolecular force between F2 molecules. The attractive forces of the covalent

bond must be overcome.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.