A) High heat of solvation for smaller ions like \[B{{e}^{2+}}\]
B) Increasing molecular weight
C) Decreasing lattice energy
D) Increase in melting points
Correct Answer: A
Solution :
The hydration energy decreases from \[B{{e}^{+2}}\] to \[B{{a}^{+2}}\]. This causes the decrease in the solubilities of the sulphates in this order. In other words, the solubilities decreases with increase in the ionic size.
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