84
209 u
Po
Polonium
Post Transition Metal
Atomic Structure
Physical State
Group
16
Period
6
Block
p
Electron Configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴
Physical Properties
Atomic Mass:
209 u
Electronegativity:
2
Atomic Radius:
135 pm
Ionization Energy:
8.417 eV
Density:
9.196 g/cm³
Melting Point:
527 K
Boiling Point:
1235 K
Historical Information
Discovered By:
Marie Curie
Year Discovered:
1898