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JAMB Chemistry 1997 Question 23

Question 23

Redox Reactions

What is the oxidation number of Z in K3ZCl6?

  1. A.−3
  2. B.+3
  3. C.−6
  4. D.+6
Show the answer and explanation

Answer: B (+3)

Explanation

The compound is neutral: 3(+1) + Z + 6(−1) = 0, so Z = +3.