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rhodium

(Encyclopedia)rhodium rōˈdēəm [key], metallic chemical element; symbol Rh; at. no. 45; at. wt. 102.90550; m.p. about 1,966℃; b.p. 3,727±100℃; sp. gr. 12.41 at 20℃; valence +2, +3, +4, +5, or +6. Rhodium ...

Benton

(Encyclopedia)Benton, city (2020 pop. 37,604), seat of Saline co., central Ark.; founded 1836. Once a significant aluminum producer, the city manufactures fabricated-...

Bellflower, city, United States

(Encyclopedia)Bellflower, city (2020 pop. 79,190), Los Angeles co., S Calif.; inc. 1957. It is mainly residential with some light industry (fabricated metal products,...

barium

(Encyclopedia)barium bârˈēəm [key] [Gr.,=heavy], metallic chemical element; symbol Ba; at. no. 56; at. wt. 137.327; m.p. 725℃; b.p. 1,640℃; sp. gr. 3.5 at 20℃; valence +2. Barium is a soft, silver-white, ...

cesium

(Encyclopedia)cesium sēˈzēəm [key] [Lat.,=bluish gray], a metallic chemical element; symbol Cs; at. no. 55; at. wt. 132.90545; m.p. 28.4℃; b.p. 669.3℃; sp. gr. 1.873 at 20℃; valence +1. Cesium is a ductil...

Heywood

(Encyclopedia)Heywood, town, Rochdale metropolitan district, NW England, in the Greater Manchester metropolitan area. Heywood's products include cotton goods, metal g...

aluminum

(Encyclopedia)aluminum ălˌyo͞omĭnˈēəm [key], metallic chemical element; symbol Al; at. no. 13; at. wt. 26.98154; m.p. 660.37℃; b.p. 2,467℃; sp. gr. 2.6989 at 20℃; valence +3. Aluminum is a silver-white...

Bell, city, United States

(Encyclopedia)Bell, city (2020 pop. 35,339), Los Angeles co., S Calif.; inc. 1927. It is chiefly residential, with printing, metal fabrication, and the manufacture of...

platinum

(Encyclopedia)platinum plătˈənəm [key], metallic chemical element; symbol Pt; at. no. 78; at. wt. 195.084; m.p. 1,772℃; b.p. 3,827±100℃; sp. gr. 21.45 at 20℃; valence +2 or +4. Pure platinum is a malleab...

Holden

(Encyclopedia)Holden, town (2020 pop. 19,905), Worcester co., central Mass., a residential suburb of Worcester; settled 1723, set off and inc. 1741. Manufactures incl...