Question

Which is bigger, hydrated Na+ or hydrated H+?

Answer 1

The molar mass of NaOH and H₂O is (23 + 16 + 1) = 40 g/mol. and (2*1 + 16) = 18 g/mol.
Thus, if we understood your question correctly, with equal amount of moles of each compound NaOH would have more mass than H₂O.