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JAMB Chemistry 2005 Question 37

Question 37

Metals and their Compounds

When pure aluminium metal is heated to red hot in the presence of nitrogen gas, the compound formed is

  1. A.Al2N
  2. B.Al2N2
  3. C.AlN
  4. D.Al2N3
Show the answer and explanation

Answer: C (AlN)

Explanation

Aluminium is +3 and nitride is N3−, so they combine 1 : 1 to give aluminium nitride, AlN.