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O
in WebElements
in X-Ray info
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O, 8
oxygen (English)
oxygène, m. (French)
Sauerstoff, m. (German)
kislorod (Russian)
oxígeno (Spanish)
syre (Swedish)
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| Symbol, number | O, 8 (non-metal), Group: 16; 6A |
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| Weight | 15.9994 |
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| In Nature | |
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| Discovered | 1774, by Scheele and Priestley (Sweden, England) |
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| Density [kg/m3] | 2000 [55 K] (solid) 1140 [90 K] (liquid) 1.429 [273 K] (gas) |
| Molar volume | 8.00 [54 K] cm3 |
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| Melting Temperature | 54.8 K (-218.2 °C) Enthalpy: 6.82 kJ/mol |
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| Boiling Temperature | 90.188 K (-182.812 °C) Enthalpy: 0.444 kJ/mol |
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| Thermal | Conductivity: 0.2674 [300 K] W/Km |
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| Configuration | 1s2 2s2p4 |
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| Ionisation [kJ/mol] |
| M--> |
M+--> |
M2+--> |
M3+--> |
M4+--> |
M5+--> |
M6+--> |
M7+--> |
M8+--> |
M9+-->M10+ |
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| Thermodynamics |
| State |
DfH° |
DfG° |
S° |
CpH |
H°298.15-H°0 |
| [kJ/mol] |
[J/Kmol] |
[kJ/mol] |
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| Isotopes |
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Mass |
In nature |
Half-life |
Spin |
m/mN |
NMM |
Decay |
| O |
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