Which of the following species has highest oxidation number of 'Cl' ?Cl2HClO3HClO4HCl
Question
Which of the following species has highest oxidation number of 'Cl' ?Cl2HClO3HClO4HCl
Solution
The oxidation number of Cl in different species is as follows:
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Cl2: In this molecule, Cl is in its elemental form, so its oxidation number is 0.
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HCl: In this molecule, Cl has an oxidation number of -1. This is because hydrogen usually has an oxidation number of +1, and the total oxidation numbers in a neutral molecule must add up to zero.
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HClO3: In this molecule, oxygen has an oxidation number of -2 and hydrogen has an oxidation number of +1. Since the molecule is neutral, the sum of the oxidation numbers must be zero. Therefore, the oxidation number of Cl in HClO3 is +5.
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HClO4: In this molecule, oxygen has an oxidation number of -2 and hydrogen has an oxidation number of +1. Since the molecule is neutral, the sum of the oxidation numbers must be zero. Therefore, the oxidation number of Cl in HClO4 is +7.
So, the species with the highest oxidation number of Cl is HClO4.
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