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| Atomic Number | 8 |
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| Atomic Symbol | O |
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| Atomic Weight | 15.9994 amu |
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| Group | Non-Metal, 16 |
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| Form | Gas |
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| Density @ STP | 1.404 g/L |
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| Melting Point | -218.79 °C (-361.82 °F, 54.36 °K) |
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| Boiling Point | -182.95 °C (-297.31 °F, 90.2 °K) |
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| Heat of Fusion | 0.44 kJ/mol |
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| Heat of Vaporization | 6.82 kJ/mol |
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| First Ionization Potential | 13.61806 eV |
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| Electronegativity (on Pauling scale) | 3.44 |
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| Specific Heat Capacity | 0.918 J/g K |
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| Ground State Electron Configuration | 2p4 |
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| Oxidation States | -2 |
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| Stable Isotopes and Natural Abundance on Earth | 16O, 99.762%; 17O, 0.038%; 18O, 0.200% |
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| Selected Radioisotopes | 15O |
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| Atomic Radius | 48 pm |
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| Crystal Structure | Monoclinic |
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| Discovered by | Priestly, 1774
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