Oxygen

O Oxygen Non-Metal

 

Atomic number:  8 Atomic weight:  15.9994
Shells:  2,6 Orbitals: [He] 2s2 2p4
Melting point:  -218.4°C Boiling point:  -182.962°C
Covalent radius:  0.73 Å Atomic volume:  14.0 cm³/mol
Atomic radius:  0.65 Å Ionic radius:  1.40 (-2) Å
Electronegativity:  3.44 Oxidation states:  
1st ionization pot.:  13.6181 V 2nd ionization pot.:  35.117 V
3rd ionization pot.:  54.934 V Specific heat:  0.92 J/gK
Heat of fusion:  0.22259 kJ/mol Heat of vapor.:  3.4099 kJ/mol
Thermal conduct.:  0.0002674 W/cmK Electrical conduct.:  -- 10^6/cm ohm
Density:  0.001429 g/cm³ Valence:  2