Which scientist discovered the radioactive element Radium?

Q. Which scientist discovered the radioactive element Radium?
Answer: Marie Curie
Notes: Radium, in the form of radium chloride, was discovered by Marie Curie and Pierre Curie in 1898. They extracted the radium compound from uraninite. In nature, radium is found in uranium ores in trace amounts as small as a seventh of a gram per ton of uraninite.

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