Elements / 8
8O15.999
Oxygen
Reactive nonmetal · p-block · ring L · spoke 16
Oxygen is element 8, a reactive nonmetal. It sits on ring L (period 2) on spoke 16, the chalcogens. Follow that spoke toward the center and out again to find its chemical relatives.
Properties
| Density | 1.43 g/L (as a gas) | Terrain → |
|---|---|---|
| Melting point | 54 K · -219 °C | Terrain → |
| Boiling point | 90 K · -183 °C | Terrain → |
| Electronegativity | 3.442nd most electronegative of 100 | Terrain → |
| First ionization energy | 1,314 kJ/mol7th highest ionization energy of 103 | Terrain → |
| Atomic weight | 15.999 u | Terrain → |
| Crustal abundance | 461,000 ppmThe most abundant in Earth's crust of 92 | Terrain → |
| Discovered | 1771 | Terrain → |
Values from open reference data; see sources. "Terrain" opens that property as a 3D landscape across the whole spiral.
Two things you might not know
- A Swede found it in Uppsala by 1773 and called it fire air, but he did not publish until 1777, after an Englishman's 1774 experiment.
- About 21% of the air and needed with every breath; in liquid or solid form it is pale sky-blue.
Checked against en.wikipedia.org.
Spoke 16: Chalcogens
Ring L (period 2)
Play with Oxygen
Watch it fly into its seat, or raise the whole spiral into a landscape and see where it peaks.