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A single dot marking an unpaired electron.
Also known as: Free radical dot, Unpaired electron marking
A dot beside an atom marks a single unpaired electron, making the species a radical. Radicals are usually very reactive, and the dot rather than any change to the drawn bonds is what says so.
Marks a species with an unpaired electron, drawn as a single dot beside the atom carrying it.
Contexts: Laboratory
Signals high reactivity, since an unpaired electron generally makes a species short-lived, and this is carried by the dot alone rather than by the bonds drawn.
Contexts: Laboratory
A single small dot placed beside or above an atom's letter in a formula or structure.