Atomic Number 8     Atomic Mass 15.9994     State gas

Color colorless     Electronegativity 3.44

Melting Point -218.4°C     Boiling Point -182.962°C

Natural Isotopes  O-16 99.762%   O-17 0.038%   O-18 0.200%

Abbreviated Electron Configuration [He] 2s² 2p⁴

Discovered by Priestly and Scheele in 1774.