Radioactivity was discovered on 1 March 1896 due to an experiment by scientist Henri Becquerel. This discovery happened suddenly.
Becquerel’s discovery was initially disregarded by the scientific community, but Becquerel’s discovery gained recognition after Marie Curie showed that uranium was not the only radioactive element.
Paris-born Henri Becquerel was awarded the Nobel Prize in Physics in 1903 along with Marie Curie and Pierre Curie.
At present, the radioactive element is also being used in the treatment of cancer.