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QuestionChemistry

Which of the following is the correct name for the polyatomic ion ClO−3? a) perchlorate b) chlorate c) chlorite d) hypochlorite
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Answer

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Step 1:
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Step 2:
: Understand the Nomenclature of Chlorine Oxyanions

The naming of chlorine oxyanions depends on the number of oxygen atoms in the ion. The suffixes follow a specific pattern: - Hypochlorite: Lowest number of oxygen atoms - Chlorite: Intermediate number of oxygen atoms - Chlorate: Higher number of oxygen atoms - Perchlorate: Highest number of oxygen atoms

Step 3:
: Analyze the Ion's Composition

The given ion is $$ClO_{3}^{-}$$, which means:
- One chlorine atom (Cl) - Three oxygen atoms (O) - Negative charge of 1

Step 4:
: Determine the Correct Name

By counting the oxygen atoms and comparing to the standard naming convention, $$ClO_{3}^{-}$$ corresponds to chlorate.

Final Answer

Explanation: - Hypochlorite (ClO^{-}) has 1 oxygen atom - Chlorite (ClO_{2}^{-}) has 2 oxygen atoms - Chlorate (ClO_{3}^{-}) has 3 oxygen atoms - Perchlorate (ClO_{4}^{-}) has 4 oxygen atoms The given ion ClO_{3}^{-} matches the chlorate ion.