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Positively charged ions are called cations (named first)

Positively charged ions are called cations (named first) Negatively charged ions are called anions Cations can be metals or polyatomic ions

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Positively charged ions are called cations (named first)

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  1. Positively charged ions are called cations (named first) • Negatively charged ions are called anions • Cations can be metals or polyatomic ions • For metals that have only one possible charge (valency) the name of the metal is used.Examples are Group I metals (charge 1+), Group II metals (charge 2+), Aluminium (charge 3+), Zinc (charge 2+), Silver (charge 1+) • For metals that can have more than one charge (valency) the name of the metal is succeeded by the valency in capital Roman numerals in bracketsORby using the suffix -ous for the lowest valency and -ic for the highest valency and sometimes with the Latin name for the metal

  2. Anions can be a negatively charged element or a polyatomic ion • Negatively charged elements have the suffix -ideExamples are oxide (O2-), sulfide (S2-), fluoride (F-), chloride (Cl-), bromide (Br-), iodide (I-), nitride (N3-), hydride (H-) • Polyatomic ions which include oxygen in the anion have the suffixes -ate or -ite. "ate" means there is more oxygen in the anion than one ending in "ite"Examples: sulfate (SO42-) has more oxygen than sulfite (SO32-), nitrate (NO3-) has more oxygen in the anion than nitrite (NO2-)Other examples are carbonate (CO32-), phosphate (PO43-) and permanganate (MnO4-)Exception: OH- is named hydroxide

  3. MgO CATION: Mg2+ is named magnesium as magnesium belongs to Group (II) and can only have one charge (valency)ANION: O2- is named oxideName of compound is magnesium oxide

  4. FeS CATION: Fe2+ is named iron (II) or ferrous as iron can have a charge of either 2+ or 3+ANION: S2- is named as sulfideName of compound is iron (II) sulfide or ferrous sulfide

  5. LiH CATION: Li+ is named as lithium since lithium is a Group I metal and can have only one charge (valency)ANION: H- is named as hydrideName of compund is lithium hydride

  6. CaCO3 CATION: Ca2+ is named as calcium (since it is a Group II metal) and can only have 1 chargeANION: CO32- is named as carbonateName of compound is calcium carbonate

  7. FeSO4 CATION: Fe2+ named as iron (II) or ferrousANION: SO42- named as sulfate

  8. FeSO3 CATION: Fe2+ named as iron (II) or ferrousANION: SO32- named as sulfiteName of compound is iron (II) sulfite or ferrous sulfite

  9. Guided Practice • Ca I2 =

  10. Guided Practice • Ca+2 I2-1 =

  11. Guided Practice • Ca+2 I2-1 = CaI2

  12. Guided Practice • Ca+2 I2-1 = CaI2 Calcium Iodide

  13. Guided Practice Na2+1 CO3-2 =

  14. Guided Practice Na2+1 CO3-2 = Na2(CO3)

  15. Guided Practice Na2+1 CO3-2 = Na2(CO3) = Sodium Carbonate

  16. Guided Practice • Cu F2 =

  17. Guided Practice • Cu+2 F2-1 =

  18. Guided Practice • Cu+2 F2-1 = CuF2 • Copper (II) Fluoride

  19. Guided Practice • Fe SO4=

  20. Guided Practice • Fe +2 SO4-2=

  21. Guided Practice Fe +2 SO4-2 = Fe (SO4)

  22. Guided Practice Fe +2 SO4-2 = Fe (SO4) = Iron (II) Sulfate

  23. Guided Practice Iron (III) Oxide =

  24. Guided Practice Iron (III) Oxide = Fe+3 O-2

  25. Guided Practice Iron (III) Oxide = Fe+3 O-2 = Fe2 (Total of +6 charge)

  26. Guided Practice Iron (III) Oxide = Fe+3 O-2 = Fe2O3

  27. Guided Practice Copper (II) Chloride =

  28. Guided Practice Copper (II) Chloride = Cu+2 Cl-1

  29. Guided Practice Copper (II) Chloride = Cu+2 Cl-1 = CuCl2

  30. Guided Practice • Ga (ClO3)3 =

  31. Guided Practice • Ga (ClO3)3-1 =

  32. Guided Practice • Ga+3 (ClO3)3-1 = Ga (ClO3)3

  33. Guided Practice • Ga+3 (ClO3)3-1 = Ga (ClO3)3 = Gallium Chlorate

  34. Guided Practice (NH4)3 (PO4)

  35. Guided Practice (NH4)3 +1 (PO4) -3

  36. Guided Practice (NH4)3 +1 (PO4) -3 = (NH4)3 (PO4)

  37. Guided Practice (NH4)3 +1 (PO4) -3 = (NH4)3 (PO4) = Ammonium Phosphate

  38. Guided Practice Mg (NO3)2 = Magnesium Nitrate = Mg (NO3)2

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