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1 Reactive Nonmetal
H
Hydrogen
EPS0.705
Velocity+0.000
Rank#2
Co-citedN
Category Nonmetal
Block s-block
State Gas
Config 1s1
Electronegativity 2.2
Density 8.988e-05 g/cm³
Melting 14.01 K
Boiling 20.28 K
Ionization 1312.0 kJ/mol
Oxidation -1, +1
Discovered 1766 · Henry Cavendish
Top papers of all time
Nature Energy · 2025
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