Consider the following trends of second group metal hydroxides. Identify the correct trend

I= Solubility ; II = Thermal stability ; III = Basic strength

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I and II increases down the group whereas III decreases down the group

I, II and III decreases down the group

I increases down the group whereas II and III decreases down the group

I, II and III increases down the group

answer is C.

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Detailed Solution

Be(OH)₂<Mg(OH)₂<Ca(OH)₂<Sr(OH)₂<Ba(OH)₂

On moving down the group, the lattice enthalpy increases and the thermal stability increases.

Be(OH)₂ <Mg(OH)₂ <Ca(OH)₂<Sr(OH)₂<Ba(OH)₂

Be(OH)₂ <Mg(OH)₂ <Ca(OH)₂<Sr(OH)₂<Ba(OH)₂

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