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JAMB Chemistry 2012 Question 38

Question 38

Metals and their Compounds

A common characteristic between zinc and the other transition elements is the ability to

  1. A.have variable oxidation states
  2. B.form complex ions
  3. C.act as a catalyst
  4. D.form coloured ions.
Show the answer and explanation

Answer: B (form complex ions)

Explanation

Zinc shows only +2 and its ions are colourless, but like transition metals it forms complex ions such as [Zn(NH3)4]2+.