Hydrogen

H Hydrogen Non-metal

 

Atomic number:  1 Atomic weight:  1.00794
Shells:  1 Orbitals:  1s1
Melting point:  -255.34°C Boiling point:  -252.87°C
Covalent radius:  0.32 Å Atomic volume:  14.4 cm³/mol
Atomic radius:  0.79 Å Ionic radius:  1.54(+1) Å
Electronegativity:  2.20 Oxidation states:   ±1
1st ionization pot.:  13.5984 V 2nd ionization pot.:  -- V
3rd ionization pot.:  -- V Specific heat:  14.304 J/gK
Heat of fusion:  0.05868 kJ/mol Heat of vapor.:  0.44936 kJ/mol
Thermal conduct.:  0.001815 W/cmK Electrical conduct.:  -- 10^6/cm ohm
Density:  0.00008988 g/cm³ Valence:  1