Which of the following types of inter molecular interactions or forces is/are called van der Waals forces?
1. London forces
2. Dipole - dipole forces
3. Dipole - induced dipole forces
4. Hydrogen bonding
Choose the correct code:
1
Only 2, 3 and 4
2
Only 1, 2 and 3
3
Only 3 and 4
4
Only 1 and 2