Which of the following ions has a higher hydr | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Hydration enthalpy is directly proportional to the charge density of the ion. Charge density is defined as $\frac{	ext{charge}}{	ext{size}}$. Fo

Vedclass · Accepted Answer

$Al^{3+}$

Vedclass · Answer

(A) Hydration enthalpy is directly proportional to the charge density of the ion. Charge density is defined as $\frac{	ext{charge}}{	ext{size}}$. For $Mg^{2+}$,the charge is $+2$. Comparing the options: $Al^{3+}$ has a higher charge $(+3)$ and a smaller ionic radius than $Mg^{2+}$,resulting in a higher charge density. $Be^{2+}$ also has a higher charge density due to its smaller size. $Na^+$ has a lower charge $(+1)$ and a larger size,so its hydration enthalpy is lower. $Mg^{3+}$ is not a stable ion in aqueous solution. Therefore,both $Al^{3+}$ and $Be^{2+}$ have higher hydration enthalpies than $Mg^{2+}$. Given the standard options,$Al^{3+}$ is the most appropriate answer.

Which of the following ions has a higher hydration enthalpy than the $Mg^{2+}$ ion?

Similar Questions

Beryllium and aluminium exhibit many properties which are similar. But,the two elements differ in

Which of the following has the highest basic nature?

Which one of the alkaline earth metals shows some anomalous behaviour and has the same electronegativity as aluminium?

Property of the alkaline earth metals that increases with their atomic number is

Which of the following is the weakest base among $NaOH$,$Ca(OH)_2$,$KOH$,and $Be(OH)_2$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module