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chemistry

chemistry. Section 9.2-1. Naming Ionic Compounds with Transition Metals. Naming and Writing Formulas for Ionic Compounds. 9.2-1.

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chemistry

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  1. chemistry Section 9.2-1 Naming Ionic Compounds with Transition Metals

  2. Naming and Writing Formulas for Ionic Compounds 9.2-1 • A recipe is a formula for the sauce—a complete list of ingredients and their proportions. Chemistry also uses formulas. Once you know the rules, you can write the formula for any chemical compound.

  3. 9.2-1 Transition Metal Ions • Ions of Transition Metals • How are the charges of some transition metal ions determined?

  4. 9.2-1 Transition Metal Ions • The charges of the cations of many transition metal ions must be determined from the number of electrons lost.

  5. 9.2-1 Transition Metal Ions • These colorful solutions contain the transition metal ions Co3+, Cr3+, Fe3+, Ni2+, and Mn2+.

  6. 9.2-1 Transition Metal Ions • Many transition metal compounds are colored and can be used as pigments.

  7. 9.2-1 Transition Metal Ions • Two methods are used to name the ions of transition metals. • The Stock System • The Classical Method We will use the “Stock System” for naming the ions of transition metals.

  8. 9.2-1 Transition Metal Ions • In the Stock System, a roman numeral in parentheses is placed after the name of the element to indicate the numerical value of the charge. • Thus, Cu+ becomes copper(I) and Cu2+ becomes copper (II).

  9. 9.2-1 Transition Metal Ions • In an older less, useful method, the classical name of the element is used to form the root name for the element. • This method is not really used now, but is shown in the table on the following page.

  10. 9.2-1 Transition Metal Ions

  11. 9.2-1 Transition Metal Ions • Tin(II) fluoride, or SnF2,is added to toothpastes to prevent cavities.

  12. 9.2-1 Transition Metal Ions • Tin(IV) sulfide, or SnS2, is used in glazes for porcelain fixtures and dishes.

  13. 9.2-1 Transition Metal Ions • Hematite, a common ore of iron, contains iron (III) oxide. The balanced formula is Fe2O3.

  14. 9.2-1 Transition Ions • Write the names for the following ionic compounds with transition metals in them. • CuCl2 • Hg2O • PbS2 • PbS • Fe2O3 • FeO copper (II) chloride mercury (I) oxide lead (IV) sulfide Lead (II) sulfide iron (III) oxide iron (II) oxide

  15. 9.2-1 Compounds With Polyatomic Ions • Lead(II)sulfate is an important component of an automobile battery.

  16. 9.2-1 Section Quiz • 1. The correct name for CrCl3 is • chromium chlorine. • chromium(III) chloride. • monochromiumtrichloride. • chromium(III) trichloride.

  17. 9.2-1 Section Quiz • 2. What is the correct formula for strontium nitride? • Sr3N2 • SrN2 • Sr2N3 • Sr3N

  18. The End

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