The periodic table/Radon

Quick Facts
Name: Radon Atom

Symbol: Rn

Mass: 222

Classification: Group 0 (Noble Gases)

Protons: 86

Electrons: 86

Neutrons: 136

Color: Colorless

Discovered in: 1900

Crystal Structure: Cubic

Melting Point: -71.0 °C

Boiling Point: -61.8 °C

Common Uses: producing neutrons for research, radiotherapy (cancer treatment)