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Date: 2012-05-09 23:54:06Valence electron Nonmetal Allotropy Alkaline earth metal Chemical element Metallic bond Metal Intermetallics Semimetal Chemistry Periodic table Metalloid | Add to Reading ListSource URL: depa.fquim.unam.mxDownload Document from Source WebsiteFile Size: 188,11 KBShare Document on Facebook |