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JAMB Chemistry 2004 Question 22

Question 22

Redox Reactions

The oxidation state of chlorine in HClO4 is

  1. A.–5
  2. B.–1
  3. C.+1
  4. D.+7
Show the answer and explanation

Answer: D (+7)

Explanation

+1 (H) + x + 4(–2) = 0, so x = +7.