Nomenclature F2011

Nomenclature F2011 - CHEMISTRY 1414 Fall 2011 CHEMICAL...

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CHEMISTRY 1414 Fall 2011 CHEMICAL NOMENCLATURE RULES 1) . IONIC COMPOUNDS General Form : Cation(Oxidation state as a roman numeral) Anion The following points always apply: - Group 1 Metals always form ions in the +1 oxidation state. - Group 2 Metals always form ions in the +2 oxidation state. - Oxygen is always found in the -2 oxidation state. - The halogens (fluoride, chloride, bromide, iodide) always form -1 ions. - Mercury has two possible oxidation states, Hg 2+ , which is mercury(II), and Hg 2 2+ which is mercury(I). Mercury(I) cations always come as a pair and are found as the Hg 2 2+ polyatomic cation. - The following cations only have only one possible oxidation state (as indicated): Zn 2+ Cd 2+ Al 3+ Ga 3+ Ag + - All other metals have more than one possible oxidation state. Polyatomic Ions: You are responsible for knowing the composition and charges on ALL of the following ions. Note there is only one polyatomic cation (other than Hg 2 2+ ): ammonium: NH 4 + nitrite: NO 2 nitrate: NO 3 - sulfite: SO 3 2- sulfate: SO 4 2- bisulfate: HSO 4 carbonate: CO 3 2- bicarbonate: HCO 3 cyanate: NCO thiocyanate: SCN hypochlorite: ClO chlorite: ClO 2 chlorate: ClO 3 perchlorate: ClO 4 hypobromite: BrO bromite: BrO 2 bromate: BrO 3 perbromate: BrO 4
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hypoiodite: IO iodite: IO 2 iodate: IO 3 periodate: IO 4 hydroxide: OH cyanide: CN phosphate: PO 4 3- phosphite: PO 3 3- hydrogen phosphate: HPO 4 2- dihydrogen phosphate: H 2 PO 4 acetate: C 2 H 3 O 2 peroxide: O 2 2- oxalate: C 2 O 4 2- thiosulfate: S 2 O 3 2- chromate: CrO 4 2- permanganate: MnO 4 dichromate: Cr 2 O 7 2- When multiple polyatomic ions are present in a compound, for example manganese(III) chlorate Mn(ClO 3 ) 3 , or ammonium phosphate (NH 4 ) 3
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This note was uploaded on 10/12/2011 for the course CHEM 1414 taught by Professor Slaughter during the Fall '07 term at Oklahoma State.

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Nomenclature F2011 - CHEMISTRY 1414 Fall 2011 CHEMICAL...

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