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

Question

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)

Canvas Classes · Accepted Answer

Analysing each statement:

A. Cu(II) complexes are always paramagnetic — TRUE ✓

:  — always has 1 unpaired electron → always paramagnetic.

B. Cu(I) complexes are generally colourless — TRUE ✓

:  — fully filled d orbitals → no  transition → colourless.

C. Cu(I) is easily oxidized — TRUE ✓

() is easily oxidised to  () in aqueous solution. It disproportionates:

D. In Fehling solution, active reagent has Cu(I) — FALSE ✗

Fehling solution contains  (as copper(II) tartrate complex). It is redu

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