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Chemistry
Hydration enthalpy order of compound: Li+ , Na+, K+, Rb+ and Cs+
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Q. Hydration enthalpy order of compound : $\ce{Li^{+} , Na^{+}, K^{+}, Rb^{+}}$ and $\ce{Cs^{+}}$
A
$\ce{Li^{+} > Na^{+} > K^{+} > Rb^{+} > Cs^{+} }$
50%
B
$\ce{Li^{+} < Na^{+} < K^{+} < Cs^{+} < Rb^{+}}$
42%
C
$\ce{ Na^{+} < K^{+} < Li^{+} < Rb^{+} < Cs^{+} }$
0%
D
$\ce{ Na^{+} < K^{+} < Li^{+} < Cs^{+} < Rb^{+} }$
8%
Solution:
Hydration Energy $\propto$ Charge density of cation.