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  • The number of statement(s) correct from the following for Copper (at. no. 29) is/are____________. (A)  

The number of statement(s) correct from the following for Copper (at. no. 29) is/are____________.

(A) \mathrm{Cu (II)} complexes are always paramagnetic
(B) \mathrm{Cu}(\mathrm{I}) complexes are generally colourless
(C) \mathrm{Cu}(\mathrm{I}) is easily oxidized
(D) In Fehling solution, the active reagent has \mathrm{Cu (I)}

Option: 1

3


Option: 2

-


Option: 3

-


Option: 4

-


Answers (1)

best_answer

Correct statements:

(A) Cu (II) Complexes are always paramagnetic because of a \mathrm{d^9} configuration
(B) Cu (I) complexes are generally colourless because of a \mathrm{d^{10}} configuration
(C) Cu (I) is easily oxidized
(D) Given statement is incorect because Fehling solution, the active reagent has Cu(II).

Hence, the correct answer is 3.

Posted by

Shailly goel

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