One atom of this element is found in the ring of a
One atom of this element is found in the ring of a furan, and an atom of it is bound to two carbons in an epoxide. Reactive species of this element are due to unpaired electrons, making them radicals. Three atoms of this element make up a compound that absorbs (*) ultraviolet light in the atmosphere. Another form of this element is added to hydrocarbons in combustion reactions. For 10 points, name this element, number eight on the periodic table, which has a diatomic form that is required for aerobic cellular respiration.
One atom of this element is found in the ring of a furan, and an atom of it is bound to two carbons in an epoxide.
{oxygen} [or {O}]