The strongest Van Der Waals force exists between molecules of, (H-1, O-16, F-19, S-32, Cl 35.5) A) H2O2 B) F2 C) HCl D) SF2 E) H2S

The Van Der Waals forces are the weakest type of intermolecular forces and they are dependent on the size and shape of the molecules as well as the number of electrons. The larger the molecule and the more electrons it has, the stronger the Van Der Waals forces.

Let's look at the options:

A) H2O2 - This molecule is not very large and does not have a particularly high number of electrons.

B) F2 - This molecule is small and only has 18 electrons.

C) HCl - This molecule is not very large and does not have a particularly high number of electrons.

D) SF2 - This molecule is larger and has more electrons than the previous options.

E) H2S - This molecule is not very large and does not have a particularly high number of electrons.

Therefore, the strongest Van Der Waals force exists between molecules of SF2 (option D).