Berzelius, Jacob element symbols

Fig. 3.7 Jons Jacob Berzelius (1779-1848), professor of chemistry in Stockholm and discoverer of the elements selenium, silicon, thorium and zirconium. He introduced the modem chemical symbols and also the term organic chemistry . From the book Berzelius, Europaresendren by C. G. Bernhard with kind permission of the Royal Swedish Academy of Sciences...

Zirconium (Zr, [Kr]4<725s2), name and symbol from the gemstone zircon (from the Persian zargun, gold like). The element was discovered (1789) by Martin H. Klaproth, the metal first prepared (1824) by Jons Jacob Berzelius. Greyish-white metal. 

Selenium - the atomic number is 34 and the chemical symbol is Se. The name derives from the Greek Selene, who was the Greek goddess of the moon because the element is chemically found with tellurium (Tellus - the Roman goddess of the earth). It was discovered by the Swedish chemist Jons Jacob Berzelius in 1817, while trying to isolate tellurium in an impure sample. 

Berzelius, Jons Jacob (1779-1848) Swedish chemist who had a major influence on the development of modern chemistry. He introduced the symbols now used to denote chemical elements and coined a number of words still used in chemistry, such as catalysis , halogen , isomerism , and protein . He also determined relative atomic masses (atomic weights) accurately, thereby helping establish Dalton s atomic theory. Berzelius was also involved in the discovery of several elements cerium, siU-con, selenium, and thorium, and the introduction of some experimental apparatus, such as rubber tubes and filter paper, into chemistry. 

Berzelius, Jons Jacob (1779-1848) Swedish chemist who was able to work out the atomic weights of more than 45 elements, several of which he discovered, including, cerium, selenium, thorium, and vanadium. He proposed the theories of isomerism and catalysis and was also notable for inventing the present-day symbols for chemical elements and compounds based on abbreviations of the Latin names of the elements. 

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