Physical and chemical properties of Hydrogen

Atomic Number:1
Element Symbol:H
Element Name:Hydrogen
Atomic Weight:1.00794
Group Number:1
Group Name:none
Period Number:1
Ground State Configuration:1s
Ground State Level:2S1/2
Standard State:Gas
Common Valences:1
Bond Length:74.130
Atomic Radius Empirical:25
Atomic Radius Calculated:53
Covalent Radius Empirical:37
Vander Waals Radius:120
Electron Affinity:72.8
First Ionization Energy:1312.0
Pauling Electronegativity:2.20
Sanderson Electronegativity:2.59
Allred Rochow Electronegativity:2.20
Mulliken Jaffe Electronegativity:2.25
Allen Electronegativity:2.300
Molar Volume:11.42
Velocity Of Sound:1270
Refractive Index:1.000132 (gas; liquid 1.12)
Melting Point:-259.14
Boiling Point:-252.87
Critical Temperature:-240
Thermal Conductivity:0.1805
Enthalpy Of Fusion:0.558 (per mol H atoms)
Enthalpy Of Vaporization:0.452 (per mole H atoms)
Enthalpy Of Atmization:218
Most Common Oxidation Numbers:1,-1
Discovered By:Henry Cavendish
Discovered At:London, England
Discovered When:1766
Origin Of Name:From the Greek words hydro and genes meaning water and generator

Calculate the molecular weight of Hydrogen or molecular weight H.

Also see the full list of chemical elements and atomic weights.

Compounds that contain Hydrogen