Hydrogen element properties

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Name: Hydrogen Symbol: H
Group: Non-Metal Atomic weight: 1.0079
Density @ 293 K: 0.0000899 g/cm3 Atomic volume: 14.4 cm3/mol
Group: Non-Metal discovered: 1766


state (s, l, g): g
melting point: 14.06 K boiling point: 20.4 K
Heat of fusion: 0.05868 kJ/mol Heat of vaporization: 0.44936 kJ/mol


1st ionization energy: 1312 kJ/mole
electronegativity: 2.2 2nd ionization energy: kJ/mole
electron affinity: 72.7711 kJ/mole 3rd ionization energy: kJ/mole
Specific heat: 14.304 J/gK heat atomization: 218 kJ/mole atoms

Oxidation & Electrons:

Shells: 1 electron configuration: 1s1
minimum oxidation number: -1 maximum oxidation number: 1
min. common oxidation no.: -1 max. common oxidation no.: 1

Appearance & Characteristics:

structure: hcp: hexagonal close pkd color: colorless
uses: rocket fuel toxicity:
hardness: mohs characteristics: diatomic,dens


reaction with air: vigorous, =>H2O
reaction with 6M HCl: none reaction with 6M HCl: none
reaction with 15M HNO3: none reaction with 6M NaOH: none

Other Forms:

number of isotopes: 3 hydride(s): H2
oxide(s): H2O chloride(s): HCl


ionic radius (2- ion): pm ionic radius (1- ion): pm
atomic radius: 37.1 pm ionic radius (1+ ion): pm
ionic radius (2+ ion): pm ionic radius (3+ ion): pm


thermal conductivity: 0.18 J/m-sec-deg
electrical conductivity: 1/mohm-cm polarizability: 0.7 A^3


source: Water, methane
rel. abund. solar system: 10.446 log abundance earth's crust: 3.1 log
cost, pure: 12 $/100g cost, bulk: $/100g

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