Multiple choice

Which of the following matchings is incorrect?

  1. NaCl : Metal excess defect

  2. FeO : Metal deficiency defect

  3. FeS : Metal deficiency defect

  4. NiO : Metal excess defect

  5. KCl : Metal excess defect

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Metal deficiency defect is generally found in NiO.