What is the state of matter with the lowest energy level?

The state of matter with the lowest energy level is solid. In solids, particles are tightly packed together and held in fixed positions by strong intermolecular forces. This close arrangement and the limited motion of particles result in minimal kinetic energy compared to liquids and gases. As temperature increases, the energy of the particles also increases, which can cause the solid to change into a liquid (melting) and eventually into a gas (vaporization). In gases and plasma states, particles have more kinetic energy, allowing them to move freely, while in liquids, they have more freedom than in solids but are still somewhat constrained. Therefore, when considering the energy levels of different states of matter, solids represent the lowest energy state.