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nihonium
(Encyclopedia)nihonium nĭhōˈnēəm [key], artificially produced radioactive chemical element; symbol Nh; at. no. 113; mass number of most stable isotope 284; m.p., b.p., sp. gr., and valence unknown. Situated in...synthetic elements
(Encyclopedia)synthetic elements, in chemistry, radioactive elements that were not discovered occurring in nature but as artificially produced isotopes. They are technetium (at. no. 43), which was the first element...element
(Encyclopedia) CE5 element, in chemistry, a substance that cannot be decomposed into simpler substances by chemical means. A substance such as a compound can be decomposed into its constituent elements by means o...iodine
(Encyclopedia)iodine īˈədīn, –dĭn [key] [Gr.,=violet], nonmetallic chemical element; symbol I; at. no. 53; at. wt. 126.90447; m.p. 113.5℃; b.p. 184.35℃; sp. gr. 4.93 at 20℃; valence −1, +1, +3, +5, o...North Merrick
(Encyclopedia)North Merrick, uninc. village (1990 pop. 12,113), Nassau co., SE N.Y., on Long Island. It is chiefly residential.Yushan
(Encyclopedia)Yushan, Yu Shan, or Mount Morrison, 13,113 ft (3,997 m) high, S Taiwan; highest peak on the island. It was first ascended in 1896 by a Japanese expedition. ...Deerfield, river, United States
(Encyclopedia)Deerfield, river, 70 mi (113 km) long, rising in S Vt. and flowing S into NW Mass., then SE to the Connecticut River at Greenfield, Mass. The river has extensive hydroelectric facilities but is also a...Cherkessk
(Encyclopedia)Cherkessk chĭrkĕskˈ [key], city (1989 pop. 113,000), capital of Karachay-Cherkess Republic, Stavropol Territory, SE European Russian, on the Kuban River. Founded in 1825 as Batalpashinsk, it manufa...hallel
(Encyclopedia)hallel həlālˈ, hălˈĕl [key] [Heb.,=praise], in Judaism, Psalms 113 to 118, sung every morning of Hanukkah, at the Passover service, and at the morning service of most major Jewish holidays as an...Leuctra
(Encyclopedia)Leuctra lo͞okˈtrə [key], village of ancient Greece, in Boeotia, 7 mi (11.3 km) SW of Thebes. There the Spartans were defeated (371 b.c.) by the Thebans under Epaminondas. A brilliant tactical succe...Browse by Subject
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