Step 1: Understanding oxidizing power.
In oxyacids of chlorine, the oxidizing power generally increases with the number of oxygen atoms attached to the chlorine atom. This is because more oxygen atoms make the chlorine more electronegative, increasing its ability to oxidize other substances.
Step 2: Analyzing the options.
(A) HClO>HClO\(_2\)>HClO\(_3\): This is the correct order. As the number of oxygen atoms increases, the oxidizing power increases.
(B) HClO>HClO\(_3\)>HClO\(_2\): This is incorrect. HClO\(_3\) has more oxygen than HClO\(_2\), so it should have greater oxidizing power.
(C) HClO\(_2\)>HClO>HClO\(_3\): This is incorrect, as HClO\(_3\) has the highest oxidizing power.
(D) HClO\(_2\)>HClO\(_3\)>HClO: This is incorrect as HClO\(_3\) should be more oxidizing than HClO\(_2\).
Step 3: Conclusion.
The correct answer is (A) HClO>HClO\(_2\)>HClO\(_3\).