Periodic Table of the Elements
Periodic Table




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name Hydrogen
latin Hydrogenium
french Hydrogéne
german Wasserstoff
symbol H
proton number 1
atomic weight 1.00794
Pauling electronegativity 2.2
electronic configuration 1s1
melting point 14.01 K, -259.14°C, -434.45°F
boiling point 20.28 K, -252.87°C, -423.17°F
group 1
period 1
state (by 20°C) gas
oxidation states -1, +1
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Year of discovery Discoverer
1766 Henry Cavendish (1731-1810)

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