Which arrangement below orders the cations from smallest to largest hydration energy? Smallest to largest means least negative hydration energy to most negative hydration energy. A)Cs⁺

Question

Which arrangement below orders the cations from smallest to largest hydration energy? Smallest to largest means least negative hydration energy to most negative hydration energy. A)Cs⁺ < K⁺< Ca²⁺ < Al³⁺ B)K⁺ < Cs⁺ < Ca²⁺ < Al³⁺ C)Al³⁺ < Ca²⁺< K⁺< Cs⁺ D)Al³⁺< Ca²⁺< Cs⁺< K⁺ E)K⁺< Cs⁺< Al³⁺< Ca²⁺

Quizplus · Accepted Answer

Hydration energy is more negative for smaller and more highly charged ions. Cs⁺ is the largest and has the least negative hydration energy, followed by K⁺, Ca²⁺, and Al³⁺ which is the smallest and has the most negative hydration energy.

Which Arrangement Below Orders the Cations from Smallest to Largest