Question

Who discovered radioactivity and what was the element involved?

Answer 1

Radioactivity was discovered by Henri Becquerel in 1896. The element involved in his discovery was uranium.                                                  

Answer 2

Radioactivity was discovered by French physicist Henri Becquerel in 1896. Becquerel discovered that uranium emitted a type of radiation, which he called "radioactivity". This radiation was later found to be caused by the decay of uranium atoms, which is the same process that occurs in other radioactive elements.

Answer 3

Radioactivity was discovered by Henri Becquerel, a French physicist, in 1896. The element involved in the discovery of radioactivity was uranium. Becquerel accidentally discovered radioactivity while conducting experiments with uranium salts and photographic plates, leading to the groundbreaking discovery of this fundamental property of certain elements.