What did Paul Emile Lecoq de Boisbaudran?
Paul-Émile Lecoq de Boisbaudran, (born April 18, 1838, Cognac, Fr. —died May 28, 1912, Paris), French chemist who developed improved spectroscopic techniques for chemical analysis and discovered the elements gallium (1875), samarium (1880), and dysprosium (1886).
Who is the founder of gallium?
Paul-Émile Lecoq de Boisbaudran
Gallium/Discoverers
How did Paul Émile Lecoq de Boisbaudran discover dysprosium?
De Boisbaudran used spectroscopy to analyse the spectra of 35 elements. He did this by using a Bunsen burner – and sometimes an electric spark – to encourage luminescence. Through this method, he discovered several new elements. These included samarium, dysprosium, europium, and most significantly, gallium.
How did Paul Émile Lecoq de Boisbaudran find gallium?
Gallium–A smart metal The French chemist Paul-Emile Lecoq de Boisbaudran discovered gallium in sphalerite (a zinc-sulfide mineral) in 1875 using spectroscopy. He named the element “gallia” after his native land of France (formerly Gaul; in Latin, Gallia).
What are uses of gallium?
It has important uses in Blu-ray technology, mobile phones, blue and green LEDs and pressure sensors for touch switches. Gallium readily alloys with most metals. It is particularly used in low-melting alloys. It has a high boiling point, which makes it ideal for recording temperatures that would vaporise a thermometer.
How did Paul Lecoq de Boisbaudran discover gallium?
Gallium was discovered in Paris by Paul-Émile Lecoq de Boisbaudran in 1875. He observed a new violet line in the atomic spectrum of some zinc he had extracted from a sample of zinc blende ore (ZnS) from the Pyrenees. He knew it meant that an unknown element was present.
What kind of scan is gallium used for?
A gallium scan is a study that uses intravenously injectable isotopes of gallium to produce nuclear medicine images. Gallium was one of the first radioisotopes used for diagnostic nuclear medicine.
Who was the first person to discover gallium?
Unknown to Lecoq de Boisbaudran, the existence of gallium had been predicted during 1871 by Dmitri Mendeleev, who gave it the name eka-aluminium. De Boisbaudran’s discovery of gallium was significant support for Mendeleev’s theory of the periodicity of the elements.
When did Lecoq de Boisbaudran discover the element samaria?
Lecoq de Boisbaudran discovered samarium in 1879 after first isolating samarium oxide. He identified the presence of a new element by using spectroscopy to observe its characteristic sharp optical absorption lines. He named his new element “samaria” after the mineral samarskite from which it was isolated.