Decreasing order of hydration energy of the following is

Options

A. `Li^(+) gt Na^(+) gt K^(+) gt Cs^(+)`
B. `Li^(+) lt Na^(+) lt K^(+) lt Cs^(+)`
C. `Li^(+) lt Na^(+) gt K^(+) lt Cs^(+)`
D. `Li^(+) gt Na^(+) lt K^(+) gt Cs^(+)`

Answer

A