Attribute | Oxygen × | Nitrogen × |
---|---|---|
Standard state | Gas | Gas |
Electron affinity (eV) | 1.461 | - |
Electron configuration | [He]2s²2p⁴ | [He]2s²2p³ |
Atomic mass (u) | 15.999 | 14.007 |
Electronegativity (pauling scale) | 3.44 | 3.04 |
Oxidation states |
|
|
Ionization energy (eV) | 13.618 | 14.534 |
Atomic radius (van der waals) (pm) | 152 | 155 |
Boiling point (K) | 90.2 | 77.36 |
Melting point (K) | 54.36 | 63.15 |
Density (g/cm³) | 0.001429 | 0.0012506 |
Atomic number | 8 | 7 |
Group name | Nonmetal | Nonmetal |
Discovered (year) | 1774 | 1772 |
Symbol | O | N |