Which cation in each set is expected to have the larger (more negative) hydration energy? I Be²⁺ or Ca²⁺ II Rb⁺ or Zn²⁺ A) Be²⁺ in set I and Rb⁺ in set II B) Be²⁺ in set I and Zn²⁺ in set II C) Ca²⁺ in set I and Rb⁺ in set II D) Ca²⁺ in set I and Zn²⁺ in set II

Question

Quizplus · Accepted Answer

Be²⁺ has a smaller ionic radius and higher charge density than Ca²⁺, leading to more negative hydration energy. Zn²⁺ has a higher charge and smaller size compared to Rb⁺, resulting in more negative hydration energy.

Which Cation in Each Set Is Expected to Have the Larger