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why does the solubility of alkaline earth metal hydroxides in water increase down the group?

Please refer the link below:

https://www.meritnation.com/ask-answer/question/why-does-the-solubility-of-alkaline-earth-metal-hydroxides-o/the-p-block-elements/6953258

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Hydration enthalpy is the energy released when one mole of gaseous ions is completely hydrated by water molecules under standard conditions. ... The hydration enthalpy also decreases since the size of the cation increases. However, due to the square factor, the lattice enthalpy decreases faster than the hydration enthalpy
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The hydration enthalpy also decreases since the size of the cation increases. However, due to the square factor, the lattice enthalpy decreases faster than the hydration enthalpy. This is why the solubility of Group 2 hydroxides increaseswhile progressing down the group
 
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