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sodium

(Encyclopedia)sodium, a metallic chemical element; symbol Na [Lat. natrium]; at. no. 11; at. wt. 22.98977; m.p. 97.81℃; b.p. 892.9℃; sp. gr. 0.971 at 20℃; valence +1. Sodium is a soft, silver-white metal. Ext...

Veracruz, state, Mexico

(Encyclopedia)Veracruz yäˈbā [key], state (1990 pop. 6,228,239), 27,759 sq mi (71,896 sq km), E central Mexico. The capital is Xalapa. Stretching c.430 mi (690 km) along the Gulf of Mexico and reaching from 30 t...

uranium

(Encyclopedia)uranium yo͞orāˈnēəm [key], radioactive metallic chemical element; symbol U; at. no. 92; mass number of most stable isotope 238; m.p. 1,132℃; b.p. 3,818℃; sp. gr. 19.1 at 25℃; valence +3, +4...

Denver

(Encyclopedia)Denver, city (2020 pop. 715,522), alt. 5,280 ft (1,609 m), state capital, coextensive with Denver co., N central Colo., on a plateau at the foot of the ...

Corman, Roger William

(Encyclopedia) Corman, Roger William, 1926-, American film director, screenwriter, and producer, b. Detroit, Mi., Stanford Univ. (B.S., 1947). Corman studied industr...

Coronado, Francisco Vásquez de

(Encyclopedia)Coronado, Francisco Vásquez de fränthēsˈkō väsˈkāth dā kōrōnäˈᵺō [key], c.1510–1554, Spanish explorer. He went to Mexico with Viceroy Antonio de Mendoza and in 1538 was made governor...

Chiapas

(Encyclopedia)Chiapas chēäˈpäs [key], state, 28,732 sq mi (74,416 sq km), SE Mexico, on the Pacific Ocean ...

Chihuahua, state, Mexico

(Encyclopedia)Chihuahua chēwäˈwä [key], state, 94,831 sq mi (245,612 sq km), N Mexico, on the border of ...

Hockney, David

(Encyclopedia)Hockney, David, 1937–, English painter, studied Royal College of Art. Moving from a distorted, semiexpressionist form of pop art, Hockney developed a highly personal realistic style, producing image...

Free State

(Encyclopedia)Free State, formerly Orange Free State, province, 50,126 sq mi (129,825 sq km), E central South Africa. It was renamed Free State shortly after the 1994...