The state of matter that has the strongest intermolecular forces is the solid state.
In solids, the particles are closely packed together and have minimal movement. The intermolecular forces in solids, such as ionic, covalent, or metallic bonds, are very strong compared to those in liquids and gases. These strong forces hold the particles in fixed positions, giving solids a definite shape and volume.
In contrast, liquids have weaker intermolecular forces, allowing particles to slide past one another, resulting in a definite volume but no fixed shape. Gases have the weakest intermolecular forces, leading to particles that are far apart and move freely, thus occupying any available space.