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Chapter 5.8 & 5.9 - Naming & Formula Writing for Ionic Compounds

Chapter 5.8 & 5.9 - Naming & Formula Writing for Ionic Compounds. Naming Binary Ionic Compounds. Binary Ionic Compounds: contain 2 different elements: metal + non-metal Name the metal first , then the nonmetal as -ide . Examples: NaCl sodium chlor ide ZnI 2 zinc iod ide

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Chapter 5.8 & 5.9 - Naming & Formula Writing for Ionic Compounds

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  1. Chapter 5.8 & 5.9 -Naming & Formula Writing for Ionic Compounds

  2. Naming Binary Ionic Compounds • Binary Ionic Compounds: contain 2 different elements: metal + non-metal • Name the metal first, then the nonmetal as -ide. Examples: NaCl sodium chloride ZnI2 zinc iodide Al2O3 aluminum oxide

  3. Naming Binary Ionic Compounds • Binary Ionic Compounds: contain 2 different elements: metal + non-metal • Name the metal first, then the nonmetal as -ide. Examples: NaCl sodium chloride ZnI2 zinc iodide Al2O3 aluminum oxide

  4. Learning Check Name the following binary compounds: 1. Na3N ________________ 2. KBr ________________ 3. Al2O3 ________________ 4. MgS ________________

  5. Solution Complete the names of the following binary compounds: Na3N sodium nitride KBr potassiumbromide Al2O3 aluminum oxide MgS magnesiumsulfide

  6. Naming Ionic Compounds Containing Multi-Valent Ions • Use a roman numeral after the name of a metal that is multi-valent (i.e. that has more than one possible charge) • Examples: FeCl3 (Fe3+) iron (III) chloride CuCl (Cu+ ) copper (I) chloride SnF4 (Sn4+) tin (IV) fluoride PbCl2 (Pb2+) lead (II) chloride Fe2S3 (Fe3+) iron (III) sulfide

  7. Learning Check Complete the names of the following binary compounds with multi-valent metal ions: FeBr2 iron (_____) bromide Cu2O copper (_____) oxide SnCl4 ______(_____ )________ Fe2O3 _______(_____)________ CuS _______(_____)________

  8. Solution Complete the names of the following binary compounds with variable metal ions: FeBr2 iron (II) bromide Cu2O copper (I) oxide SnCl4 tin(IV)chloride Fe2O3 iron(III)oxide CuS copper(II)sulfide

  9. Learning Check Name the following compounds: A. CaO 1) calcium oxide 2) calcium(I) oxide 3) calcium (II) oxide B. SnCl4 1) tin tetrachloride 2) tin(II) chloride 3) tin(IV) chloride C. Co2O3 1) cobalt oxide 2) cobalt (III) oxide 3) cobalt trioxide

  10. Solution Name the following compounds: A. CaO 1) calcium oxide B. SnCl43) tin(IV) chloride C. Co2O32) cobalt (III) oxide

  11. Naming Ternary Ionic Compounds • Contain at least 3 elements • Name the nonmetals as a polyatomic ion • Examples: NaNO3Sodium nitrate K2SO4Potassium sulfate Al(HCO3)3Aluminumbicarbonate or Aluminumhydrogen carbonate

  12. Learning Check Match each set with the correct name: A.Na2CO31) magnesium sulfite MgSO32) magnesium sulfate MgSO43) sodium carbonate B. Ca(HCO3)21) calcium carbonate CaCO32) calcium phosphate Ca3(PO4)2 3) calcium bicarbonate

  13. Solution A.Na2CO33) sodium carbonate MgSO31) magnesium sulfite MgSO42) magnesium sulfate B. Ca(HCO3)23) calcium bicarbonate CaCO31) calcium carbonate Ca3(PO4)2 2) calcium phosphate

  14. Learning Check A. aluminum nitrate 1) AlNO3 2) Al(NO)3 3) Al(NO3)3 B. copper(II) nitrate 1) CuNO3 2) Cu(NO3)2 3) Cu2(NO3) C. Iron (III) hydroxide 1) FeOH 2) Fe3OH 3) Fe(OH)3 D. Tin(IV) hydroxide 1) Sn(OH)4 2) Sn(OH)2 3) Sn4(OH)

  15. Solution A. aluminum nitrate 3) Al(NO3)3 B. copper(II) nitrate 2) Cu(NO3)2 C. Iron (III) hydroxide 3) Fe(OH)3 D. Tin(IV) hydroxide 1) Sn(OH)4

  16. Formula Writing For Ionic Compounds (using magnesium chloride as an example) • Step 1: Write the symbol with the ionic charge for the metal ion followed by the non-metal ion. • Mg 2+ Cl1- • Step 2: Use the “criss-cross” rule to place subscripts beside opposing ions – this will ensure an overall charge of zero in the ionic formula. • Mg1 Cl2 • Step 3: Simplfy (if possible) • Mg Cl2 (subscripts of 1 are not shown)

  17. Formula Writing For Ionic Compounds • E.g. 2 Write the chemical formula for aluminum nitrate. • Step 1: Al 3+ NO31- • Step 2: Al 1Cl3 • Step 3:Al Cl3 • E.g. 3 Write the chemical formula for calcium oxide. • Step 1: Ca 2+ O2- • Step 2: Ca 2 O 2 * bothsubscripts divisible by two • Step 3:Ca O

  18. Formula Writing For Ionic Compounds • E.g. 4 Write the chemical formula for iron (III) oxide. • Step 1: Fe 3+ O2- • Step 2: Fe2 O3 • Step 3:Fe2 O3 • E.g. 5 Write the chemical formula for calcium sulfate • Step 1: Ca 2+ SO42- • Step 2: Ca 2 (SO4) 2 • Step 3: CaSO4

  19. Formula Writing For Ionic Compounds • E.g. 6 Write the chemical formula for barium phosphate. • Step 1: Ba2+ PO43- • Step 2: Ba3 (PO4)2 • Step 3:Ba3 (PO4)2 • E.g. 7 Write the chemical formula for aluminum tripolyphosphate. • Step 1: Al 3+ P3O105- • Step 2: Al 5(P3O10)3 • Step 3: Al 5 (P3O10)3

  20. Homework: Q.1-9 p.195. Q.1-7 p.198.

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