Disulfur

Disulfur is the diatomic molecule with the formula S₂. It is analogous to the dioxygen molecule but rarely occurs at room temperature. This violet gas is commonly generated by heating sulfur above 720 °C and comprises 99% of the vapor at low pressure (1 mm Hg) at 530 °C. S₂ is one of the minor components of the atmosphere of Io, which is predominantly composed of SO₂. Diatomic molecules are common containing C, O, N, and F, but for heavier elements they are often only stable at high temperatures.