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lithium

(Encyclopedia)lithium lĭthˈēəm [key] [Gr.,=stone], metallic chemical element; symbol Li; at. no. 3; interval in which at. wt. ranges 6.938–6.997; m.p. about 180.54℃; b.p. about 1,342℃; sp. gr. .534 at 20�...

rutherfordium

(Encyclopedia)rutherfordium rŭᵺˌərfôrˈdēəm [key], artificially produced radioactive chemical element; symbol Rf; at. no. 104; mass number of most stable isotope 265; m.p., b.p., and sp. gr. unknown; valenc...

normality

(Encyclopedia)normality, in chemistry: see concentration. ...

Henderson, Richard, Scottish molecular biologist

(Encyclopedia)Henderson, Richard, 1945–, Scottish molecular biologist, Ph.D. Cambridge, 1969. Henderson has been a researcher at the Laboratory of Molecular Biology in Cambridge since 1973. In 2017 he was awarded...

Hahn, Otto

(Encyclopedia)Hahn, Otto ôˈtō hän [key], 1879–1968, German chemist and physicist. His important contributions in the field of radioactivity include the discovery of several radioactive substances, the develop...

Flory, Paul John

(Encyclopedia)Flory, Paul John, 1910–85, American chemist, b. Sterling, Ill., Ph.D. Ohio State Univ., 1934. Flory was a researcher with the DuPont Company (1934–37) and a professor at the Univ. of Cincinnati (1...

McMillan, Edwin Mattison

(Encyclopedia)McMillan, Edwin Mattison, 1907–91, American physicist, b. Redondo Beach, Calif., grad. California Institute of Technology, 1928, Ph.D. Princeton, 1932. On the faculty of the Univ. of California from...

Karrer, Paul

(Encyclopedia)Karrer, Paul, 1889–1971, Swiss organic chemist, Ph.D. Univ. of Zürich, 1911. From 1912 to 1918, Karrer was a chemist at the Georg Speyer Haus, Frankfurt-am-Main. He left in 1919 to become professor...

Wurtz, Charles Adolphe

(Encyclopedia)Wurtz, Charles Adolphe shärl ädôlfˈ vürts [key], 1817–84, French chemist. He was professor at the Sorbonne (1852–75), at the Faculty of Medicine, Paris (1853–75), and at the Faculty of Scie...

Zsigmondy, Richard Adolf

(Encyclopedia)Zsigmondy, Richard Adolf, 1865–1929, Austrian-German chemist, Ph.D. Univ. of Munich, 1889. Zsigmondy was a lecturer at the Univ. of Munich (1887–1893) and at the Univ. of Graz (1893–97), then wo...