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Formula writing Formula writing
Binary compounds Two elements only End in ide Binary ionic-metal and nonmetal Binary molecular – 2 nonmetals
Binary ionic compounds Group A metal – name normal Second element changed to an ide ending
Binary ionic compounds CaCl 2 Na 2 O AlBr 3 BaS LiI Calcium chloride Sodium oxide Aluminum bromide Barium Sulfide Lithium iodide
Binary molecular coumpounds Always two nonmetals First nonmetal name normal Second nonmetal always ends in ide Must identify the numbers hanging down (subscripts)
Prefixes Mono- Di- Tri- Tetra- Penta- Hexa – Hepta- Octa- Nona- Deca
Binary molecular compounds CO N 2 O 5 P SO 3 PCl 5 Carbon monoxide Dinitrogen pentoxide Diphosphorus trioxide Sulfur trioxide Phosphorus pentachloride
Binary ionic w/group B Still two elements Still a metal and nonmetal First element from group B not A Still ends in ide Must name metal completely Must know all oxidation states of the metal
Binary group B PbCl 2 PbCl 4 CuCl CuCl 2 Lead chloride Copper chloride
PbCl 2 PbCl 4 Lead (II) chloride Plumbous chloride Lead (IV) chloride Plumbic chloride
CuCl CuCl 2 Copper (I) chloride cuprous chloride Copper (II)chloride cupric chloride
CrO NiCl 2 CoI 3 FeBr 2 SnO Chromous oxide Chromium (II) oxide Nickelous chloride Nickel (II) chloride Cobaltic iodide Cobalt (III) iodide Ferrous bromide Iron (II) bromide Stannous oxide Tin (II) oxide
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