Oxygen
| Basic Information | Crystal Structure | Isotope | Facts | Related Links |
| Symbol: | O |
| Atomic Number: | 8 |
| Atomic weight: | 15.9994u |
| Melting Point: | 50.35K |
| Boiling Point: | 90.18K |
| Number of Protons/Electrons: | 8 |
| Number of Neutrons: | 8 |
| Classification: | Non-metal |
| Crystal Structure: | Cubic |
| Density | 0.0001429g/mL |
| Color: | colorless |
| Bonding radius: | 0.73A |
| Atomic radius: | 0.65A |
| Ionization Potential: | 13.618V |
| Electronegativity: | 3.44 |
| Heat of vaporization: | 3.4099kJ/mol |
| Heat of fusion: | 0.22259kJ/mol |
| Specific heat: | 0.92J/gK |
| Electron configuration: | 1s22s22p4 |
Crystal Structure
| Isotope | Half Life |
| O15 | 122.2 seconds |
| O16 | Stable |
| O17 | Stable |
| O18 | Stable |
| Date of Discovery: | 1774 |
| Discoverer: | Joseph Priestly |
| Uses: | supports life |
| Obtained From: | from liquid air |