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.
Pierre and Marie Curie, French Physicists discovered two new elements emitting radiation, polonium on July 18, 1898. and radium in December of 1898. Marie Curie named the energy emitted from uranium and thorium as radioactivity. and also invented the first instrument to measure radioactivity.