86
222 u
Rn
Radon
Noble Gas
Atomic Structure
Physical State
Group
18
Period
6
Block
p
Electron Configuration
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶
Physical Properties
Atomic Mass:
222 u
Electronegativity:
N/A
Atomic Radius:
120 pm
Ionization Energy:
10.745 eV
Density:
0.00973 g/cm³
Melting Point:
202 K
Boiling Point:
211.3 K
Historical Information
Discovered By:
Friedrich Ernst Dorn
Year Discovered:
1900