alu·mi·num /əˈlumənəm/ 名詞
A·lu·mi·num n. The metallic element forming the base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, having a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Also called aluminium.
n : a silvery ductile metallic element found primarily in
bauxite [syn: aluminium, Al, atomic number 13]
Atomic number: 13
Atomic weight: 26.9815
Silvery-white lustrous metallic element of group 3 of the periodic table.
Highly reactive but protected by a thin transparent layer of the oxide
which quickly forms in air. There are many alloys of aluminum, as well as
a good number of industrial uses. Makes up 8.1% of the Earth's crust, by
weight. Isolated in 1825 by H.C. Oersted.