Peligot, Eugene Melchior

Uranium - the atomic number is 92 and the chemical symbol is U. The name derives from the planet Uranus, which in Roman mythology was Father Heaven . The German chemist Martin-Heinrich Klaproth discovered the element in 1789, following the German/English astronomer William Hershel s discovery of the planet in 1781. The metal was first isolated by the French chemist Eugene-Melchior Peligot in 1841. 

French chemist Eugene-Melchior Peligot Dense radioactive metal named for the planet Uranus first used in nuclear fission in the 1930s it isotopes fundamental to the operation of nuclear breeder reactors. 

Eugene-Melchior Peligot was born, on February 24, 1811, at Paris. He studied at the Lycee Henri IV and at the Central School of Arts and Manufactures, but was obliged to leave school for financial reasons. In 1832, however, good fortune dawned for him, and he was admitted to the laboratory of the Ecole Polytechnique to study under J.-B. Dumas. A few years later he was collaborating with Dumas in important researches in organic chemistry. 

Birth of Eugene-Melchior Peligot, the first to isolate uranium. 

For some time, scientists believed that Klaproth had isolated uranium. Eventually they realized he had found uranium oxide (UO2), a compound of uranium. It was not until a half cenmry later, in fact, that the pure element was prepared. In 1841, French chemist Eugene-Melchior Peligot (1811—1890) produced pure uranium from uranium oxide. 

Avery small amount of (0.005%) occurs in secnlar equilibrium with Uranium was discovered in 1789 by Martin Klaproth, who named it after the planet Uranus (which had just been discovered). In 1841 Eugene Melchior Peligot prepared uranium metal and proved that Klaproth had actually isolated uranium dioxide. 

The molecular formula for cinnamaldehyde was determined in 1834 by the French chemists Jean Baptiste Andre Dumas (1800-1884) and Eugene Melchior Peligot (1811-1890), although its structural formula was deciphered only in 1866 by the German chemist Emil Erlenmeyer (1825-1909). 

The use of uranium, in its natural oxide form, dates back to at least 79 A.D., when it was used to add color to ceramic glazes.The German chemist Martin Klaproth is credited with discovering uranium in samples of the mineral pitchblende in 1789. It was first isolated as a metal in 1841 by Eugene-Melchior Peligot. Uranium was discovered to be radioactive by French physicist Henri Becquerel in 1896, who first discovered the process of radioactivity with uranium minerals. 

Eugene-Melchior Peligot has first isolated uranium metal in 1841 by reacting anhydrous UCI4 with potassium in a platinum crucible. 

Though once believed rare, uranium is more common in the Earth s crust than mercury, antimony, silver, or cadmium, and its salts were used as coloring agents as early as 80 ce. The silvery white metal was later isolated when the French chemist Eugene-Melchior Peligot reduced the chloride salt with potassium. 

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