Interpretation:
The oxidation number of the underlined species in
Concept introduction:
A species gain or loses electrons to form anions or cations respectively. To keep a track on the loss or gain of an electron, a number is assigned in the form of oxidation number. The rules used to determine oxidation number of an atom in a molecule is shown below.
• For each atom in its elemental state, the oxidation number is zero.
• For a monoatomic ion, the oxidation number is same as the charge on that species.
• The oxidation number of combined oxygen is
• The sum of oxidation numbers in a molecule or polyatomic ion or molecule is equal to the overall charge on the species.
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Introductory Chemistry: An Active Learning Approach
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