Isotopes of neon
naturally occurs as three stable isotopes:,, and. Their stated natural abundances are those measured in air.
In addition, 17 artificial radioisotopes have been discovered, ranging from to, all short-lived: the most stable is with a half-life of 3.38 minutes. All others are under a minute, and most under a second. The isotopes lighter than the stable ones usually decay to fluorine or oxygen, while heavier ones decay to sodium.