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Formula of an Ionic Compound with a Multivalent Metal

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Presentation on theme: "Formula of an Ionic Compound with a Multivalent Metal"— Presentation transcript:

1 Formula of an Ionic Compound with a Multivalent Metal
Some transitional metals are multivalent, meaning they have more than one ion form. On the periodic table, the most common form of the ion is listed on top. See pages (c) McGraw Hill Ryerson 2007

2 Formula of an Ionic Compound with a Multivalent Metal
Some transitional metals are multivalent, meaning they have more than one ion form. On the periodic table, the most common form of the ion is listed on top. In the name of the compound, Roman numerals are used following the positive ion to indicate which ion was used. See pages (c) McGraw Hill Ryerson 2007

3 Formula of an Ionic Compound with a Multivalent Metal
For example, what is the formula manganese (III) sulphide? See pages (c) McGraw Hill Ryerson 2007

4 Formula of an Ionic Compound with a Multivalent Metal
For example, what is the formula manganese (III) sulphide? This manganese is Mn3+. sulfur is S2– See pages (c) McGraw Hill Ryerson 2007

5 Formula of an Ionic Compound with a Multivalent Metal
For example, what is the formula manganese (III) sulphide? This manganese is Mn3+. sulfur is S2– Lowest common multiple of 3 and 2 is 6 2 Mn3+ ions and 3 S2– ions (6 electrons) Mn S2– Mn2S3 See pages (c) McGraw Hill Ryerson 2007

6 Formula of an Ionic Compound with a Multivalent Metal
What would the name be for TiF4 See pages (c) McGraw Hill Ryerson 2007

7 Formula of an Ionic Compound with a Multivalent Metal
Try the name for TiF4 titanium is Ti4+ or Ti3+ fluorine is F– See pages (c) McGraw Hill Ryerson 2007

8 Formula of an Ionic Compound with a Multivalent Metal
Try the name for TiF4 titanium is Ti4+ or Ti3+ fluorine is F– 4 F– ions See pages (c) McGraw Hill Ryerson 2007

9 Formula of an Ionic Compound with a Multivalent Metal
Try the name for TiF4 titanium is Ti4+ or Ti3+ fluorine is F– 4 F– ions That means 4 electrons are being transferred. If there is only 1 Ti, then it must be Ti4+ because that gives away 4 electrons. See pages (c) McGraw Hill Ryerson 2007

10 Formula of an Ionic Compound with a Multivalent Metal
Try the name for TiF4 titanium is Ti4+ or Ti3+ fluorine is F– 1 Ti4+ ion and 4 F– ions NAME: titanium (IV) fluoride See pages (c) McGraw Hill Ryerson 2007

11 Polyatomic Ions Some ions, called polyatomic ions, are made up of several atoms joined together with bonds. THEY ARE LIKE ONE PACKAGE THAT ALL SHARES THE CHARGE. See pages (c) McGraw Hill Ryerson 2007

12 The whole group has a + or – charge, not the individual atoms.
Polyatomic Ions The whole group has a + or – charge, not the individual atoms. See pages (c) McGraw Hill Ryerson 2007

13 What is the formula of sodium sulphate?
Polyatomic Ions What is the formula of sodium sulphate? See pages (c) McGraw Hill Ryerson 2007

14 Na+ and SO42– Na2SO4 What is the formula of sodium sulphate?
Polyatomic Ions What is the formula of sodium sulphate? Na+ and SO42– Na2SO4 See pages (c) McGraw Hill Ryerson 2007

15 What is the name of the compound KClO?
Polyatomic Ions What is the name of the compound KClO? See pages (c) McGraw Hill Ryerson 2007

16 K+ = potassium ClO– = hypochlorite potassium hypochlorite
Polyatomic Ions What is the name of the compound KClO? K+ = potassium ClO– = hypochlorite potassium hypochlorite See pages (c) McGraw Hill Ryerson 2007

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