The force of attraction between molecules in solids is strong. This is due to the arrangement and bonding of the atoms within the solid structure.

1. Intermolecular Forces:
In solids, the intermolecular forces are the forces of attraction between molecules. These forces can be categorized into three main types: London dispersion forces, dipole-dipole forces, and hydrogen bonding. These forces act between the molecules and hold them together.

2. London Dispersion Forces:
London dispersion forces are the weakest type of intermolecular force. They occur due to temporary fluctuations in electron distribution, which create temporary dipoles in the molecules. These temporary dipoles induce similar dipoles in neighboring molecules, resulting in attractive forces between them. While London dispersion forces are relatively weak, they still contribute to the overall force of attraction between molecules in solids.

3. Dipole-Dipole Forces:
Dipole-dipole forces occur between polar molecules. These forces arise due to the attraction between the positive end of one molecule and the negative end of another molecule. The strength of dipole-dipole forces depends on the magnitude of the molecular dipole moment. In solids composed of polar molecules, the dipole-dipole forces contribute to the strong force of attraction between the molecules.

4. Hydrogen Bonding:
Hydrogen bonding is a special type of dipole-dipole interaction that occurs between a hydrogen atom bonded to a highly electronegative atom (such as oxygen, nitrogen, or fluorine) and another electronegative atom in a different molecule. Hydrogen bonding is stronger than regular dipole-dipole forces and contributes significantly to the force of attraction between molecules in solids, especially in substances like water and ammonia.

5. Overall Strong Force of Attraction:
In solids, the combination of London dispersion forces, dipole-dipole forces, and hydrogen bonding results in a strong force of attraction between molecules. This strong force is responsible for the rigidity and stability of solid materials.

In conclusion, the force of attraction between molecules in solids is strong. The intermolecular forces, including London dispersion forces, dipole-dipole forces, and hydrogen bonding, contribute to this strong force of attraction.