logoAround science

H - Hydrogen - periodic table of the elements

This flammable gas is lighter than air and the most abundant element in the universe. Henry Cavendish discovered that hydrogen was an element in 1766. Hydrogen is very stable and makes an outstanding fuel. Many experts believe that the oil industry is suppressing the development and use of hydrogen fuel for profit, to the extreme detriment to consumers, the environment and the future of life on this planet.


Atomic number - 1 Density g/mL 0 .00008987
Atomic weight u 1 .0079 Melting point K 14 .025
Bonding radius A 0 .32 Boiling point K 20 .268
Atomic radius A 0 .79 Heat of vaporization kJ/mol 0 .44936
Ionization Potential V 13 .598 Heat of fusion kJ/mol 0 .05868
Electronegativity - 2 .2 Specific heat J/gK 14 .304
The oxide is amphoteric.
Crystal are hexagonal.

Electron configuration: 1s1

Other elements of the periodic table

123456789101112131415161718
HHe
LiBeBCNOFNe
NaMgAlSiPSClAr
KCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLa * HfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAc ** RfDbSgBhHsMt110111112113
Lanthanides* CePrNdPmSmEuGdTbDyHoErTmYbLu
Actinides ** ThPaUNpPuAmCmBkCfEsFmMdNoLr