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Phenomenon of radioactivity was discovered by

Q. Phenomenon of radioactivity was discovered by

 A   Madame Curie
 B   Henri Becquerel
 C   Juliet curie
 D   Roentgen
Answer:-Henri Becquerel
Explanation:  

Received the Noble Prize in physics for being the first to discover radioactivity as a phenomenon separate from that of x-rays and document the differences between the two. Henri Becquerel learned of Roentgen’s discovery of x-rays through the fluorescence that some materials produce.

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