In `CuSO_(4).5H_(2)O` copper is coordinated to

in solid CuSO_4 .5H_2O copper is co-ordinated to:

. In solid.CuSO4. 5 H2O còpper is coordinated to

Number of H_(2)O molecules which is/are hydrogen bonded in CuSO_(4).5H_(2)O but not coordinated to centre metal is