Which of these statements are true? Select all that apply. The AHf for Bra(l) is 0 kJ/mol.
The Ahi for He(l) is 0 kJ/mol.
The AHf for Hg(l) is 0 kJ/mol.
The AHf for Cl2(g) is 0 kJ/mol.
The AHf for N2(l) is 0 kJ/mol.

the answer is c.the valence of the atoms combine .

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.  

it would only be the stuff in module eight so you need to study all the lessons in that you also could check the flvs

hope this : )