Chemistry 2 question?

Question

1. Place the following cations in order from the lowest to the highest hydration energy.

a. K+ < Ca2+ < Cs+
b. K+ < Cs+ < Ca2+
c. Ca2+ < K+ < Cs+
d. Ca2+ < Cs+ < K+
e. Cs+ < K+ < Ca2+


how does hydration energy work? and whats the answer?

Answer 1

Answer e is true.

2+ ions attract water better than 1+, and the bigger the ion, the less it will attract.