Radium was discovered by Pierre and Marie Curie at 1898 in France.
Origin of name: from the Latin word "radius" meaning "ray".
Atomic Number: 88
Atomic Weight: 226
Melting Point: 973 K (700°C or 1292°F)
Boiling Point: 1413 K (1140°C or 2084°F)
Density: 5 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 7 Group Number: 2 Group Name: Alkaline Earth Metal