Isotopes of oxygen

There are three known stable isotopes of oxygen: ¹⁶O, ¹⁷O, and ¹⁸O. Oxygen also has radioisotopes ranging from ¹¹O to ²⁶O. They all have short half-lives. The longest-lived radioisotope is ¹⁵O. It has a half-life of 122.24 seconds. The shortest-lived radioisotope is ¹²O. It has a half-life of 580(30)×10⁻²⁴ seconds.