Consider the following step of a reaction mechanism.
A+B → D + E (slow)

Which statement identifies a reaction intermediate?

1.A, if it is used in a later step
2.B, if it is produced in an earlier step
3. D. if it is used in an earlier step
4. E, if it is produced in a later step

idk what the question is about

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.