Radium (Ra)
Atomic Number: 88
Atomic Weight: 226.03
Melting Point: 700
Boiling Point: 1140
Specific Gravity: 5.0
Valences: 2
Radium was discovered in 1898 by M and Mme Curie and isolated in 1911 by Mme Curie and
Debierne. It is radioactive, emitting alpha, beta and gamma rays. It is used to treat cancer and
produce self-luminous paints. Radium is found in all uranium minerals. Large deposits are
located in Ontario and Australia.
[LM]
{RW}
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