the main element extracted was radium
uranium
This element is actinium (Ac).
You think probably to radium (Ra) and polonium (Po).
Radium was discovered by Marie Sklodowska Curie, a Polish chemist, and Pierre Curie, a French chemist, in 1898. Marie Curie obtained radium from pitchblende, a material that contains uranium, after noticing that unrefined pitchblende was more radioactive than the uranium that was separated from it. She reasoned that pitchblende must contain at least one other radioactive element. Curie needed to refine several tons of pitchblende in order to obtain tiny amounts of radium and polonium, another radioactive element discovered by Curie. One ton of uranium ore contains only about 0.14 grams of radium. Today, radium can be obtained as a byproduct of refining uranium and is usually sold as radium chloride (RaCl2) or radium bromide (RaBr2) and not as a pure material.
pitchblende was the first, but any good uranium ore will do as it is a daughter element of uranium's decay.
Marie and Pierre Curie isolate radium. On April 20, 1902, Marie and Pierre Curie successfully isolate radioactive radium salts from the mineral pitchblende in their laboratory in Paris. In 1898, the Curies discovered the existence of the elements radium and polonium in their research of pitchblende.
Uranium
This element is actinium (Ac).
Radium (Ra)
You think probably to radium (Ra) and polonium (Po).
Pitchblende is a name for uraninite, a radioactive mineral from which uranium ore is extracted. The composition of pitchblende can include uranium oxide (UO2) and triuranium octoxide (U3O8), along with lead oxide and pockets of helium.Pitchblende is a radioactive, uranium-rich mineral and ore. It has a chemical composition that is largely UO2, but also contains UO3 and oxides of lead, thorium, and rare earth elements. It is known as pitchblende due to its black color and high density. It is also commonly referred to as Uraninite.
Polonium is a radioactive element discovered by Pierre and Marie Curie by boiling Pitchblende with water and chemicals.
Protactinium is a natrural chemical element, radioactive, unstable; protactinium is found in extremely low concentrations, in pitchblende - an uranium ore.
Radium was discovered by Marie Sklodowska Curie, a Polish chemist, and Pierre Curie, a French chemist, in 1898. Marie Curie obtained radium from pitchblende, a material that contains uranium, after noticing that unrefined pitchblende was more radioactive than the uranium that was separated from it. She reasoned that pitchblende must contain at least one other radioactive element. Curie needed to refine several tons of pitchblende in order to obtain tiny amounts of radium and polonium, another radioactive element discovered by Curie. One ton of uranium ore contains only about 0.14 grams of radium. Today, radium can be obtained as a byproduct of refining uranium and is usually sold as radium chloride (RaCl2) or radium bromide (RaBr2) and not as a pure material.
pitchblende was the first, but any good uranium ore will do as it is a daughter element of uranium's decay.
The Curies noted that pitchblende, one of many compounds of uranium, had significantly higher amounts of radioactivity than other compounds. From that, they concluded that pithcblende contained an element more radioactive than uranium. They chemically removed those parts of pitchblende with less radioactivity, and ended up with a microscopic amount of radium -- after processing literally tons of pitchblende.
As radioactive element is an element that is on the Priodic Table of Elements. A Radioactive Element is usually radioactive.
Yes Radium is found in nature. "(L. radius: ray) Radium was discovered in 1898 by Mme. Curie in the pitchblende or uraninite of North Bohemia, where it occurs. There is about 1 g of radium in 7 tons of pitchblende. The element was isolated in 1911 by Mme. Curie and Debierne by the electrolysis of a solution of pure radium chloride employing a mercury cathode; on distillation in an atmosphere of hydrogen, this amalgam yielded the pure metal. "Originally, radium was obtained from the rich pitchblende ore found in Joachimsthal, Bohemia. The carnotite sands of Colorado furnish some radium, but richer ores are found in the Republic of Zaire and the Great Lake region of Canada. Radium is present in all uranium minerals, and could be extracted, if desired, from the extensive wastes of uranium processing. Large uranium deposits are located in Ontario, New Mexico, Utah, Australia, and elsewhere.