Polonium
The Curies, Madame Marie and Pierre, a married couple who was know for discovering Radium, used in X-rays and Polonium, named after her home country. The Curies, however, did not discover Curium.
they
Discovering and labeling Radon (Radium) and unfortunately dieing from it.
No. The Curies did not discover uranium. They discovered polonium and radium, of which polonium is more radioactive.
Curium was named after the Curies.
This element Po(84) was the first one discovered by the Curies while they were investigating the cause of pitchblenderadioactivity (1898). The pitchblende, after removal of the radioactive elements uranium and thorium (Th), was more radioactive than both the uranium and thorium put together. This spurred the Curies on to find additional radioactive elements. The Curies first separated out polonium from the pitchblende1), and then within a few years, also isolated radium.1) The type locality for this ore is Jáchymov in the Czech Republic, from where F.E.Brückmann described the mineral in 1727.Pitchblende from the Johanngeorgenstadt deposit in Germany was used by M.Klaproth in 1789 to discover the element uranium.
Radium was discovered in France by the Curies, in samples of ore from the Austrian Empire, in 1898.
The Curies discovered two radioactive elements: polonium and radium.
The Curies published their paper, describing the newly discovered element -- that they named "radium" -- on 1898 December 26. Their work was conducted in Paris France.
By Becquerels, which is one disintegration per second, or by curies, which is 3.3x1010 disintegrations per second.
Marie Curies contribute was Discovering Radio activity and without that we would not have known radium relieves pain and suffering and alot of people would still be dealing with that today!
On a purely foundational level, the Curies were the first to show that atoms were not unchangeable -- that radioactivity was not a chemical reaction but, instead, comes from the element itself. Radium, which the Curies discovered, is a highly radioactive source of alpha particles. It was used in Rutherford's experiment that showed the atom had a nuclear structure. For many decades, radium was also used as a means to kill tumors.