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The solubility in water of sulphate down...

The solubility in water of sulphate down the Be group is `Be gt Mg gt Ca gt Sr gt Ba.`

A

High heat of solvation for smaller ions like `Be^(2+)`

B

Increasing molecular weight

C

Decreasing lattice energy

D

Increases in melting points

Text Solution

Verified by Experts

The correct Answer is:
A
The hydration energy decreases from `Be^(+2)` to `Ba^(+2)`. This causes the decreases in the solubilities of the sulphates in this order. In other words, the solubilities decreases with increases in the ionic size.
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