8
15.999 u
O
Oxygen
Nonmetal
Atomic Structure
Physical State
Group
16
Period
2
Block
p
Electron Configuration
[He] 2s² 2p⁴
Physical Properties
Atomic Mass:
15.999 u
Electronegativity:
3.44
Atomic Radius:
152 pm
Ionization Energy:
13.618 eV
Density:
0.001429 g/cm³
Melting Point:
54.36 K
Boiling Point:
90.2 K
Historical Information
Discovered By:
Carl Wilhelm Scheele
Year Discovered:
1771