Multiple choice

Who discovered natural radioactivity ?

  1. Madam Curie

  2. Pierre Curie

  3. Henry Becquerel

  4. William Ramsay
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Henri Becquerel discovered natural radioactivity in 1896 when he noticed that uranium salts could expose photographic paper without external light. Marie and Pierre Curie later expanded on his work. Becquerel shared the 1903 Nobel Prize with the Curies.

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