| Double salt | Coordination compound (complex) |
| (1) Double salts exist only in the solid state and dissociate into their constituent ions in the aqueous solutions. | (1) Coordination compounds exist in the solid-state as well as in the aqueous or non-aqueous solutions. |
| (2) Double salts lose their identity in the solution. | (2) They do not lose their identity completely. |
| (3) The properties of double salts are same as those of their constituents. | (3) The properties of coordination compounds are different from their constituents. |
| (4) Metal ions in the double salts show their normal valence. | (4) Metal ions in the coordination compounds show two valences namely primary valence and secondary valence satisfied by anions or neutral molecules called ligands. |
| (5) For example in K2SO4. K2SO4. Al(SO4)3. 24H2O. The ions K+, Al3+ and SO4 show their properties. | (5) In K4 [Fe(CN)6], ions K+ and [Fe(CN)6]4‘~ ions show their properties. |
