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Strontium was first isolated as a metal in 1808 by Humphry Davy using the then newly discovered process of electrolysis. During the 19th century, strontium was mostly used in the production of sugar from sugar beets (see strontian process ).
Strontium belongs to the same periodic family as calcium (alkaline earth metals), and is metabolised in a similar fashion, preferentially targeting metabolically active regions of the bone. 89 Sr is an artificial radioisotope used in the treatment of osseous (bony) metastases of bone cancer .
The two discovered a new element in a molybdenum sample that was used in a cyclotron, the first element to be discovered by synthesis. It had been predicted by Mendeleev in 1871 as eka-manganese. [171] [172] [173] In 1952, Paul W. Merrill found its spectral lines in S-type red giants. [174]
The ideal formula of strontianite is SrCO 3, with molar mass 147.63 g, [4] but calcium (Ca) can substitute for up to 27% of the strontium (Sr) cations, and barium (Ba) up to 3.3%. [2] The mineral was named in 1791 for the locality, Strontian, Argyllshire, Scotland, where the element strontium had been discovered the previous year. [2]
AST SpaceMobile (NASDAQ: ASTS) stock bounced back Thursday from yesterday, surging 5.2% in the first 10 minutes of trading on a big advance in direct-to-cell satellite communications (DTC) technology.
Distrontium ruthenate, also known as strontium ruthenate, is an oxide of strontium and ruthenium with the chemical formula Sr 2 RuO 4. It was the first reported perovskite superconductor that did not contain copper .
August – Asteroid 4769 Castalia is the first asteroid directly imaged, by radar from Arecibo. August 25 – The Voyager 2 spacecraft makes its closest approach to Neptune, providing definitive proof of the planet's rings. September 5 – Pluto–Charon barycentre comes to perihelion. [1] Asteroid 5128 Wakabayashi is discovered by Masahiro ...
On Sept. 12, 2024, AST SpaceMobile (NASDAQ: ASTS) took a bold leap into the future. That was the day it announced the launch of its first five operational satellites and, basically, the beginning ...