CO2 intermolecular forces are sources of attraction between atoms of carbon and oxygen that cause them to join and form carbon dioxide. The action of intermolecular forces must be observed through a microscope and by analyzing data, including vapor pressure.
Three types of intermolecular forces exist. The weakest are known as Van der Waals forces, which result from random movements of electrons that attract other molecules. In other types of intermolecular forces, the attraction is based on variance of polar bonds. In hydrogen bonds, atoms of hydrogen bond in a way that gives the hydrogen a positive charge. Because CO2 does not contain hydrogen, it does not use hydrogen bonds. Carbon dioxide consists of two oxygen atoms and one carbon atom. It is in gaseous form at room temperature and is a component of the atmosphere of Earth.