Carbon dioxide is considered more stable than individual atoms as now the outer energy levels of all atoms are filled. Covalent bonds involve the sharing of electrons, and all bonds form in order to achieve more stability. The overall molecule will be more stable than the individual atoms. No atoms will bond together to become less stable.
<span>Carbon dioxide is a colorless and odorless gas that is vital to life on Earth. This naturally occurring chemical compound is made up of a carbon atom covalently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent by volume. Natural sources include volcanoes, hot springs and geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.</span>
