For complex compounds, the correct statements are:
(A) Number of unpaired electrons of both tetrahedral and octahedral complexes depends on the nature of the ligands.
(B) In general, copper (II) and zinc (II) display coloured and colourless complex compounds, respectively.
(C) Shape of co-ordination compounds does not depend on the hybridization of the central metal.
(D) Nickel (II) complexes show diamagnetic and paramagnetic behaviour in square planer and octahedral structures, respectively.
