The number of statement(s) correct from the following for Copper is/are (A) Cu II complexes are always paramagnetic (B) Cu I complexes are generally colourless (C) Cu I is easily oxidized (D) In Fehling solution, the active reagent has Cu I

Step-by-step solution

Cu ( I ) have fulfilled d-subshell and does not have any unpaired electrons so, its complexes will be colourless mostly. and it will be diamagnetic. But Cu ( II ) has one unpaired electron, so, it will be paramagnetic. A , B , C are correct and D is incorrect because Fehling solution has Cu II