Which of the following statement is correct ?

Options

A. `LiOH gt NaOH gt KOH gt RbOH` (solubility order
B. `Be(OH)_(2) gt Mg(OH)_(2) gt Ca(OH)_(2) gt Sr(OH)_(2)` (basic strength order)
C. `LI lt K lt Na lt Rb lt Cs` (density order)
D. `Li^(+) gt Na^(+) gt K^(+) gt Rb^(+) gt Cs^(+)` (ionic mobilty in aqueous medium)

Answer

C