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Which scientist discovered the radioactive element radium?

  • A.Isaac newton
  • B.Albert Einstein
  • C.Benjamin franklin
  • D.Marie Curie

Answer: D

Marie Curie discovered radium.

She and Pierre isolated it from pitchblende in 1898, along with polonium, having processed tonnes of ore to obtain a fraction of a gram. She won the 1911 Nobel Prize in Chemistry for it.

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