Ra
Radium
Alkaline Earth Metal
Radium is a highly radioactive metallic element discovered by Marie and Pierre Curie. It glows in the dark and was once used in luminous paints.
Key Facts
Atomic Number
88
Atomic Weight
226
State
Solid
Half-life
1,600 years (Ra-226)
Discovered
1898
Marie Curie and Pierre Curie
Overview
Description
Radium is a highly radioactive metallic element discovered by Marie and Pierre Curie. It glows in the dark and was once used in luminous paints.
Discovery
Radium was discovered in 1898 by Marie Curie and Pierre Curie.