If Na^(+) ion is larger than Mg^(2+) ion and S^(2-) ion is larger than Cl^(-)ion, which of the following will be least soluble in water?

If Na^(+) ion is larger than Mg^(2+) ion and S^(2-) ion is larger than

1.	If Na^(+) ion is larger than Mg^(2+) ion and S^(2-) ion is larger than Cl^(-)ion, which of the following will be least soluble in water?
Answer» NACL `Na_(2)S` `MgCl_(2)` `MgS` Answer :D