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The Oxygen ( Periodic Element N°8)

OXYGEN

(from Greek "which forms acids")

SYMBOL: O

ATOMIC NUMBER: 8

MOLAR MASS (g\mol): 16,00

NORMAL STATE: gaseous

DENSITY (g*cm-3): 1,14

MELTING POINT (°C): -218

BOILING POINT (°C): -183

IONIZATION ENERGY (Kj\mol): 1310, 3388

ELECTRON AFFINITY (Kj\mol): +141, -844

ELECTRONEGATIVITY: 3,4

MAIN OXIDATION STATES: -2

ATOMIC RADIUS (pm): 66

IONIC RADIUS (pm): 132 (2-)