Property of alkaline earth metals that increases with their atomic number
A
Solubility of their hydroxides in water
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B
Solubility of their sulphates in water
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C
Ionisation energy
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D
Electronegativity
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Solution
The correct option is A
Solubility of their hydroxides in water
Solubility of alkaline earth metal hydroxides increase with their atomic number. In other words, as we go down the group IIA, the solubilities of the hydroxides increases.