Oxygen
Symbol
O
Atomic Number
8
Atomic Weight
15.9994
Element Classification
Discovered By
Joseph Priestly, Carl Wilhelm Scheele
Discovery Date
1774 (England/Sweden)
Name Origin
Greek: oxys and genes, (acid former).
Density (g/cc)
1.149 (@ -183°C)
Melting Point (K)
54.8
Boiling Point (K)
90.19
Appearance
Colorless, odorless, tasteless gas; pale blue liquid
Atomic Radius (pm)
n/a
Atomic Volume (cc/mol)
14.0
Covalent Radius (pm)
73
Ionic Radius
132 (-2e)
Specific Heat
0.916 (O-O)
Fusion Heat (kJ/mol)
n/a
Evaporation Heat (kJ/mol)
n/a
Thermal Conductivity (@25°C W/m K)
0.027
Debye Temperature (K)
n/a
Pauling Negativity Number
3.44
First Ionizing Energy (kJ/mol)
1313.1
Oxidation States
-2, -1
Electronic Configuration
[He] 2s2 2p4
Lattice Structure
Cubic(CUB)
Lattice Constant
6.830
Lattice C/A Ratio
n/a
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