A) \[Ba{{(OH)}_{2}}<Sr{{(OH)}_{2}}<Ca{{(OH)}_{2}}<Mg{{(OH)}_{2}}\]
B) \[Ba{{(OH)}_{2}}<Ca{{(OH)}_{2}}<Sr{{(OH)}_{2}}<Mg{{(OH)}_{2}}\]
C) \[Mg{{(OH)}_{2}}<Sr{{(OH)}_{2}}<Ca{{(OH)}_{2}}<Ba{{(OH)}_{2}}\]
D) \[Mg{{(OH)}_{2}}<Ca{{(OH)}_{2}}<Sr{{(OH)}_{2}}<Ba{{(OH)}_{2}}\]
Correct Answer: D
Solution :
(Thermal stability of ? Ionic character hydroxdies) or Lattice energy \[Mg{{\left( OH \right)}_{2}}<Ca{{\left( OH \right)}_{2}}<Sr{{\left( OH \right)}_{2}}<Ba{{\left( OH \right)}_{2}}\]
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