In a displacement reaction, an element reacts with a compound. For example, two molecules of carbon (2C) might react with one molecule of
silicon dioxide (SiO2). The element takes the place of one of the elements
in the compound, displacing it. In this case, the carbon bonds with the
oxygen, taking place of the silicon. The products are Si and 2Co.
Which of the following best summarizes what happens in a displacement reaction?
A
Two elements react to form a compound.
B
A compound breaks down into elements.
с
An element and a compound react to form a different element and compound
D
An element and a compound react to form another compound.

you need to have a picture of the atom that way we can answer it

it is b that is the answer.

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.