Which one of the following has least ionic mobility in aqueous solution ?
Hydration Enthalpy….Li+>Na+>K+>Rb+>Cs+
Thus ionic size in aqueous solution…..Li+>Na+>K+>Rb+>Cs+
Thus ionic mobility in aqueous solution…..Li+<Na+<K+<Rb+<Cs+
but ionic mobility in fused state ……Li+>Na+>K+>Rb+>Cs+