Among the following, which is water insoluble?

Among the following, which is water insoluble?
  1. Sodium fluoride
  2. Potassium fluoride
  3. Beryllium fluoride
  4. Magnesium fluoride

Solution

The fluorides of alkaline earth metals except beryllium fluoride are insoluble in water because of large values of their lattice energy. Hence magnesium fluoride is insoluble in water.

Asked in: AP EAMCET 2007

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