A) Solubility: \[BeS{{O}_{4}}>MgS{{O}_{4}}>CaSO4\]
B) Reducing character: \[Li<Na<K<Rb<Cs\]
C) Thermal stability: \[BeC{{O}_{3}}>MgC{{O}_{3}}>CaC{{O}_{3}}\]
D) \[M.P.:LiF>NaF>KF>RbF\]
Correct Answer: A
Solution :
Solubility of sulphate decrease down group 2 with decrease in hydration energy.
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