properties of hydrogen
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at standard temperature and pressure, hydrogen is a non-toxic, nonmetallic, odourless, tasteless, colourless, and highly combustible diatomic gas with the molecular formula H2.
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Chemical properties of hydrogen - Health effects of hydrogen - Environmental effects of hydrogen.
Atomic number 1
Atomic mass 1.007825 g.mol ^-1
Electronegativity 2.1
according to Pauling
Density 0.0899*10 ^-3 g.cm
^-3 at 20°C
Melting point. - 259.2 °C
Explanation:
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