You'll have seen or read in the news about how some countries are trying to develop nuclear weapons, and how some countries are trying to stop them. The element uranium lies below all of this fuss, so let's try to understand its chemistry.
Frederic Joliot-Curie and Irene Joliot-Curie were both French scientists. Husband and wife, they were jointly awarded Nobel laureates in 1935 for their joint discovery of new radioactive isotopes which they prepared artificially. They are also known for their contribution towards the discovery of the neutron.