Hydrogen Element Properties

Hydrogen

s1
H
Hydrogen
s2
He
Helium
General
Name(Hydrogen)
Symbol(H)
Number(1)
Group Number(1)
Group(Non-Metal)
Block(s)
Density(0.0000899 g/cm3)
Atomic Weight(1.00794 g/mol)
Atomic Volume(14.4 cm3/mol)
Discover(1766)


States
State(Gas)
Melting Point(14.01 K)
Boiling Point(20.28 K)
Triple Point(13.8033 K)
Critical Point(32.97 K)
Heat of Fusion(0.05868 kJ/mol)
Heat of Vaporization(0.44936 kJ/mol)


Energies
First Ionization Energy(1312 kJ/mole)
Second Ionization Energy(Nil)
Third Ionization Energy(Nil)
Electronegativity(2.20)
Electron Affinity(72.7711 kJ/mole)
Specific Heat(14.304 J/gK)
Heat Atomization(218 kJ/mole atoms)


Oxidation and Electrons
Shells(1)
Electron Configuration(1s1)
Minimum Oxidation Number(-1)
Maximum Oxidation Number(1)
Minimum Common Oxidation Number(-1)
Maximum Common Oxidation Number(1)


Appearance and Characteristics
Crystal Structure(hexagonal)
Characteristics(diatomic, dens)
Color(colorless)
Uses(rocket fuel)
Hardness(mohs)
Toxicity(None)


Reactions
Reaction with Air(vigorous, => H2O)
Reaction with 6M HCl(None)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(3)
Hydride(H2)
Oxide(H2O)
Chloride(HCL)


Radius
Atomic Radius(37.1 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(Nil)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(Nil)


Conductivity
Thermal Conductivity(0.18 J/m-sec-deg)
Electrical Conductivity(1/mohm-cm)
Polarizability( 0.7 A3)


Abundance
Source(Water, methane)
Relation Abundance Solar System(10.446 log)
Abundance Earths Crust(3.1 log)


s1
H
Hydrogen
s2
He
Helium

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