Who discovered radioactivity?

Henri Becquerel
Max Planck
Ernest Rutherford
Maria Skłodowska-Curie
Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist, Nobel laureate, and the first person to discover evidence of radioactivity. For work in this field he, along with Marie Skłodowska-Curie and Pierre Curie,[2] received the 1903 Nobel Prize in Physics. The SI unit for radioactivity, the becquerel (Bq), is named after him.
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Henri Becquerel
Max Planck
Ernest Rutherford
Maria Skłodowska-Curie
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flagAustralia
60%
2%
2%
35%
40
flagthe Netherlands
57%
7%
14%
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flagIndia
47%
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36%
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flagPoland
34%
9%
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33%
2521
flagAustria
34%
7%
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50%
38
flagPakistan
33%
8%
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12
flagGermany
31%
9%
15%
44%
200
flagFrance
30%
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13
flagthe United Kingdom
27%
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29%
36%
61
flagthe Philippines
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flagCanada
18%
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11