Definition of antemortem in the Definitions.net dictionary. Meaning of antemortem. What does antemortem mean? Information and translations of antemortem in the most comprehensive dictionary definitions resource on the web.
Boron is a chemical element. It is a metalloid. Its chemical symbol is B and its atomic number is 5. It was first discovered in 1808 by the efforts of French physicist Joseph-Louis Gay-Lussac, French chemist Louis-Jaques Thenard. They reacted sodium with boric acid to separate boron element. Later it was isolated by British chemist Sir Humphry Davy independently.
Radon was discovered by Friedrich Ernst Dorn, a German chemist, in 1900 while studying radium 's decay chain. Originally named niton after the Latin word for shining, nitens, radon has been known as radon since 1923.