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Properties of Liquid hydrogen

Properties of H2 (Hydrogen):

Compound NameHydrogen
Chemical FormulaH2
Molar Mass2.01588 g/mol

Chemical structure
H2 (Hydrogen) - Chemical structure
Lewis structure
3D molecular structure
Physical properties
AppearanceColorless liquid
Melting-259.14 °C
Boiling-252.87 °C

Alternative Names

Hydrogen (cryogenic liquid), Refrigerated hydrogen
LH, para-hydrogen
Hydrogen

Elemental composition of H2
ElementSymbolAtomic weightAtomsMass percent
HydrogenH1.007942100.0000
Mass Percent CompositionAtomic Percent Composition
H: 100.00%
H Hydrogen (100.00%)
H: 100.00%
H Hydrogen (100.00%)
Mass Percent Composition
H: 100.00%
H Hydrogen (100.00%)
Atomic Percent Composition
H: 100.00%
H Hydrogen (100.00%)
Identifiers
CAS Number1333-74-0
SMILES[H][H]
Hill formulaH2

Related compounds
FormulaCompound name
H3Triatomic hydrogen

Sample reactions for H2
EquationReaction type
N2 + H2 = NH3synthesis
H2 + O2 = H2Osynthesis
Fe2O3 + H2 = Fe + H2Osingle replacement
H2 + Cl2 = HClsynthesis
Fe3O4 + H2 = Fe + H2Osingle replacement

Related
Molecular weight calculator
Oxidation state calculator

Chemical Compound Properties Database

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