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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. CaCl 2 Na 2 O AlBr 3 BaS LiI. Calcium chloride

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Formula writing

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  1. Formula writing

  2. Binary compounds • Two elements only • End in “ide” • Binary ionic-metal and nonmetal • Binary molecular – 2 nonmetals

  3. Binary ionic compounds • Group A metal – name normal • Second element changed to an “ide” ending

  4. CaCl2 Na2O AlBr3 BaS LiI Calcium chloride Sodium oxide Aluminum bromide  Barium Sulfide Lithium iodide Binary ionic compounds

  5. Binary molecular coumpounds • Always two nonmetals • First nonmetal name normal • Second nonmetal always ends in “ide” • Must identify the numbers hanging down (subscripts)

  6. Mono- Di- Tri- Tetra- Penta- Hexa – Hepta- Octa- Nona- Deca- 1 2 3 4 5 6 7 8 9 10 Prefixes

  7. CO N2O5 P203 SO3 PCl5 Carbon monoxide Dinitrogen pentoxide Diphosphorus trioxide Sulfur trioxide Phosphorus pentachloride Binary molecular compounds

  8. 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

  9. PbCl2 PbCl4 CuCl CuCl2 Lead chloride Lead chloride Copper chloride Copper chloride Binary group B

  10. PbCl2 PbCl4 Lead (II) chloride Plumbous chloride Lead (IV) chloride Plumbic chloride

  11. CuCl CuCl2 Copper (I) chloride cuprous chloride Copper (II)chloride cupric chloride

  12. CrO NiCl2 CoI3 FeBr2 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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