Polonium
Symbol
Po
Atomic Number
84
Atomic Weight
208.9824
Element Classification
Discovered By
Pierre and Marie Curie-Sklodowska
Discovery Date
1898 (France/Poland)
Name Origin
Named for Poland, native country of Marie Curie.
Density(g/cc)
9.32
Melting Point
527
Boiling Point(K)
1235
Appearance
Silvery-gray metal
Atomic Radius(pm)
176
Atomic Volume(cc/mol)
22.7
Covalent Radius(pm)
146
Ionic Radius
67 (+6e)
Specific Heat
0.125
Fusion Heat
(10)
Evaporation Heat(kj/mol)
(102.9)
Thermal Conductivity(@25°C W/m K)
n/a
Debye Temperature
n/a
Pauling Negativity Number
2.0
First Ionizing Energy(kj/mol)
813.1
Oxidation States
6, 4, 2
Electronic Configuration
[Xe] 4f14 5d10 6s2 6p4
Lattice Structure
Simple Cubic(SC)
Lattice Constant
3.350
Lattice C/A Ratio
n/a
