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Radioactivity was discovered by

  • A.Henri Becquerel
  • B.Karl landsteiner
  • C.Edward o. wilson
  • D.Konrad lorenz

Answer: A

Henri Becquerel discovered radioactivity.

In 1896 he found that uranium salts fogged a photographic plate wrapped in black paper, without any exposure to light, so the radiation came from the element itself. He shared the 1903 Nobel Prize with the Curies.

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