The Periodic Table of Elements
8
O
Oxygen
15.9994(3) amu
Additional Information:
| State | Group Block | Density | Atomic Radius | Electron Affinity | Ionization Energy | Melting Point | Boiling Point | Year Discovered |
|---|---|---|---|---|---|---|---|---|
| gas | nonmetal | 0.001429 kg/L | 73 pm | -141 | 1314 kJ/mol | 55 °K | 90 °K | 1774 |
