alkali earths

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• alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… …   Universalium

• alkali — /al keuh luy /, n., pl. alkalis, alkalies, adj. n. 1. Chem. a. any of various bases, the hydroxides of the alkali metals and of ammonium, that neutralize acids to form salts and turn red litmus paper blue. b. any of various other more or less… …   Universalium

• Alkaline earths — Alkaline Al ka*line (?; 277), a. [Cf. F. alcalin.] Of or pertaining to an alkali or to alkalies; having the properties of an alkali. [1913 Webster] {Alkaline earths}, certain substances, as lime, baryta, strontia, and magnesia, possessing some of …   The Collaborative International Dictionary of English

• Periodic table — This article is about the periodic table of the elements . For other uses, see The Periodic Table. The periodic table of the chemical elements (also known as the periodic table or periodic table of the elements) is a tabular display of the 118… …   Wikipedia

• alkaline-earth metal — /al keuh luyn errth , lin /, Chem. any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals. [1900 05] * * * ▪… …   Universalium

• Cerium — lanthanum ← cerium → praseodymium ↑ Ce ↓ Th …   Wikipedia

• Alkaline earth metal — Group 2 Period  2 4 Be 3 …   Wikipedia

• Ytterbium — Yb redirects here. For the unit of information, see Yottabit. thulium ← ytterbium → lutetium ↑ Yb ↓ No …   Wikipedia

• Magnesium — Not to be confused with Manganese. sodium ← magnesium → aluminium Be ↑ Mg ↓ Ca …   Wikipedia

• Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

• clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… …   Universalium