Symbol
Rn
Atomic Number
86
Atomic Mass
222
Protons
86
Neutrons
136
Electrons
86
Type
Noble Gas
Isotopes
Radon-222
Discovery Year
1899
Discovered By
Frederick William Dorn
Group
18
Period
6
Boiling Point
-61.7°C
Melting Point
-71°C
Electron Configuration
[Xe] 6s² 4f¹⁴ 5d¹⁰ 6p⁶
Density (g/cm³)
0.222
Crystal Structure
Cubic
Magnetism
Diamagnetic
Abundance in Earth's Crust
Trace
Phase at Room Temperature
Gas