| General | |
|---|---|
| Symbol | 18O |
| Names | oxygen-18, O-18, Ω |
| Protons | 8 |
| Neutrons | 10 |
| Nuclide data | |
| Natural abundance | 0.2% |
| Isotope mass | 17.9991610 u |
| Spin | 0 |
| Isotopes of oxygen Complete table of nuclides | |
Oxygen-18 (18
O, Ω) is a natural, stable isotope of oxygen and one of the environmental isotopes.