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The Periodic table (hydgen ((Hydrogen, 1H, Purple glow in its plasma…
The Periodic table
hydgen
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Standard atomic weight (Ar, standard) [1.00784, 1.00811] conventional: 1.008
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Melting point 13.99 K (−259.16 °C, −434.49 °F)
Boiling point 20.271 K (−252.879 °C, −423.182 °F)
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Triple point 13.8033 K, 7.041 kPa
Critical point 32.938 K, 1.2858 MPa
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Oxidation states −1, +1 (an amphoteric oxide)
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Speed of sound 1310 m/s (gas, 27 °C)
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