Which of the following has the highest enthal | vedclass

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(A) The enthalpy of hydration is inversely proportional to the size of the ion and directly proportional to the charge density. For alkaline earth met

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$MgCl_2$

Vedclass · Answer

(A) The enthalpy of hydration is inversely proportional to the size of the ion and directly proportional to the charge density. For alkaline earth metal ions,the size increases down the group $(Be^{2+} Therefore,the enthalpy of hydration decreases down the group. Among the given options,$Mg^{2+}$ has the smallest ionic radius,resulting in the highest charge density and the highest enthalpy of hydration.

Which of the following has the highest enthalpy of hydration?

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