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, Canada and Australia.
[LM]
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