Unformatted text preview: 3 )"). Rule 3. If the cation is a metal ion with a fixed charge, the name of the cation is the same as the name of the (neutral metal) element from which it is derived (e.g., Na + = "sodium", Ca 2+ = "calcium", Al 3+ = "aluminum"). If the cation is a metal ion with a variable charge, the charge on the cation is indicated by using a Roman numeral, within parentheses, immediately following the name of the cation (e.g., Fe 3+ = "iron(III)", Fe 2+ = "iron(II)"). Rule 4. If the anion is a monatomic ion, the anion is named by adding the suffix -ide to the root of the element name (e.g., iod ine = I, " iod ide" = I-; sulf ur = S, " sulf ide" = S 2-). Note: Greek prefixes are not used to indicate the number of atoms, or polyatomic ions, in the formula unit for the compound (e.g., Ca(NO 3 ) 2 is named "calcium nitrate" not "calciuim dinitrate")....
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This note was uploaded on 02/05/2012 for the course CHEM 115 taught by Professor L during the Fall '02 term at Purdue.
- Fall '02