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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 ...

clearing

(Encyclopedia)clearing, in banking, the periodic settling of bankers' claims against each other, for which local banks establish clearinghouse associations. Clearinghouses are said to have existed in Florence by a....

Deluge

(Encyclopedia)Deluge dĕlˈyo͞oj [key], in the Bible, the overwhelming flood that covered the earth and destroyed every living thing except the family of Noah and the creatures in his ark. Archaeology has yielded ...

erbium

(Encyclopedia)erbium ûrˈbēəm [key] [from Ytterby, a town in Sweden], metallic chemical element; symbol Er; at. no. 68; at. wt. 167.259; m.p. 1,529℃; b.p. 2,863℃; sp. gr. 9.05 at 25℃; valence +3. Erbium is...

europium

(Encyclopedia)europium yo͝orōˈpēəm [key] [from Europe], metallic chemical element; symbol Eu; at. no. 63; at. wt. 151.964; m.p. about 820℃; b.p. about 1,600℃; sp. gr. 5.25 at 25℃; valence +2 or +3. Europ...

darmstadtium

(Encyclopedia)darmstadtium, artificially produced radioactive chemical element; symbol Ds; at. no. 110; mass number of most stable isotope 281; m.p., b.p., sp. gr., and valence unknown. Situated in Group 10 of the ...

Quemoy

(Encyclopedia)Quemoy kĭmoiˈ [key], Chin. Chinmen, Kinmen, or Jinmen, Taiwanese island group (2010 pop. 56,703), Taiwan Strait, just off Fujian prov., China, and c.150 mi (240 km) W of Taiwan. The group consists o...

Quiché

(Encyclopedia)Quiché kēchāˈ [key], indigenous peoples of Mayan linguistic stock, in the western highlands of Guatemala; most important group of the ancient southern Maya. The largest of the contemporary native ...

osmium

(Encyclopedia)osmium ŏzˈmēəm [key], metallic chemical element; symbol Os; at. no. 76; at. wt. 190.23; m.p. 3,045±30℃; b.p. 5,027±100℃; sp. gr. 22.57 at 20℃; valence usually +0 to +8. Osmium is a very ha...

inert gas

(Encyclopedia)inert gas or noble gas, any of the elements in Group 18 of the periodic table. In order of increasing atomic number they are: helium, neon, argon, krypton, xenon, and radon. They are colorless, odorle...