Nuclear discoveries: Who discovered natural radioactivity? Identify the scientist associated with the 1896 discovery of spontaneous radioactivity in uranium salts. Choose the correct option.

Q: Nuclear discoveries: Who discovered natural radioactivity? Identify the scientist associated with the 1896 discovery of spontaneous radioactivity in uranium salts. Choose the correct option.

History In 1896, Henri Becquerel observed spontaneous emission from uranium salts fogging photographic plates, revealing natural radioactivity; Marie and Pierre Curie later isolated Ra and Po. Final Answer Henri Becquerel

Difficulty: Easy

Marie Curie
J. J. Thomson
Henri Becquerel
Ernest Rutherford

Correct Answer: Henri Becquerel

Explanation:

History
In 1896, Henri Becquerel observed spontaneous emission from uranium salts fogging photographic plates, revealing natural radioactivity; Marie and Pierre Curie later isolated Ra and Po.

Final Answer
Henri Becquerel

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