Symbol: Ra
Atomic Number: 88
Atomic Mass: 226
Number of Protons: 88
Number of Neutrons: 148
Number of Electrons: 88
Melting Point: 700´╗┐ degrees C
Boiling Point: 1140 degrees C
Normal Phase: Solid
Cost: $25/1 mg.
Classification: metal
Group: Alkaline Earth Metal

From the Latin word for "ray", radius
Discovered by Marie Sklodowska Curie and Pierre Curie in 1898

Interesting Facts
  • Radium has been used to make self-luminous paints for watches, air craft instrument dials and other instrumentation.
  • Radium has largely been replaced be cobalt.
  • Radium is about one million times more active than uranium.

BY HANNAH WALSHexternal image moz-screenshot-11.png