UNIT # 5 Review Objectives Reading

5.1 Ionic Bonding

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5.2 Covalent Bonding 5.3 Polar Covalent Bonding 5.4 Bond Dipoles 5.5 Electroneg- ativity 5.6 Category of Bond Type 5.7 Polarity of Molecules 5.8 Writing Chemical Formulae
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5.9 Information in a Chemical Formula
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5.10 Oxidation Numbers
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Problems 1 | 2

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COMPOUNDS 5.10 -
Oxidation Numbers

5.10.1 - Assignment of Oxidation Numbers

The rules for assigning oxidation numbers are in the Chemist"s tools

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. Click on the symbol
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and follow the elalso rules to asauthorize oxidation number to atoms in a chemical formula.

Let"s go via the examples below to view just how it"s done.

Now let"s take a look at sodium nitprice, NaNO3. What is the oxidation number of nitrogen?

First of all, let"s remember what we"ve learnt:

To determine the oxidation variety of nitrogen, we use

Rule #6: Oxygen is commonly assigned an oxidation number of -2 for oxides. In this case, we have 3 oxygen atoms in NO3-.
Rule #9: The amount of oxidation numbers of an ion or facility ion is the same as the charge on that ion.

Let the oxidation number of nitrogen be stood for as N. Set up the equation and solve for N.




You are watching: The oxidation number of n in nano3 is

N + 3 (-2) = -1
N = +5

The obvious charge on nitrogen is +5.

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Section 6.3 Oxidation Numbers. Calculating Oxidation Numbers ..p121

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