So basically I'm sort of unclear as to what van der walls interactions are and how they occur...like I know that they're a type of noncovalent bond that occurs between identical groups in two molecules.
Like, how do the partial charges appear? (e.g. lets say there are 2 hydrogen groups, i thought that they both have partial positive charges, how does one get induced with a partial negative charge...? Something to do with their orientation at a certain time?