Science Fair Project Encyclopedia |Name, Symbol, Number||Oxygen,
O, 8| |Group, Period, Block||16 (VIA), 2, p| |Density,
Hardness||1.429 kg/m3, NA| |Atomic weight||15.9994 g/mol|
|Atomic radius (calc.)||60 (48) pm| |Covalent radius||73 pm|
|van der Waals radius||152 pm| |e− 's per energy level||2, 6|
|Oxidation states (Oxide)||−2,−1 (neutral)| |State of
matter||gas (paramagnetic)| |Melting point||50.35 K (−369.04
°F)| |Boiling point||90.18 K (−297.34 °F)| |Heat of
vaporization||3.4099 kJ/mol| |Heat of fusion||0.22259 kJ/mol|
|Vapor pressure||__ Pa at __ K| |Speed of sound||317.5 m/s at 25
°C| |Electronegativity||3.44 (Pauling scale)| |Specific heat
capacity||920 J/(kg·K)| |Electrical conductivity||ND MS/m|
|Thermal conductivity||0.02674 W/(m·K)| |1st ionization
potential||1313.95 kJ/mol| |2nd ionization potential||3388.3
kJ/mol| |3rd ionization potential||5300.5 kJ/mol| |4th
ionization potential||7469.2 kJ/mol| |Most stable isotopes| |SI
units & STP are used except where noted.| - This article is
about the che