Some elements have a low degree of freedom and high intermolecular forces between its molecules. These elements are solid at room temperature.
Elements can be classified based on physical states, or the states of matter. At room temperature and pressure the Physical States, or states of matter, are solids, gases or liquids and these are referred to as the 3 states of matter.
Some elements such as most metals are solids at room temperatures, others such as oxygen, hydrogen, nitrogen, etc are a gases and others are liquids.
