12th Class Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank 12th CBSE Chemistry The d-and f-Block Elements

  • question_answer
    Why is Cu (I) diamagnetic while Cu (II) is paramagnetic?

    Answer:

                      The configuration of copper in the two oxidation states is: \[Cu(I)\, & :\,\,\,[Ar]{{\,}^{18}}\,3{{d}^{10}};\,\,Cu(II)\,:\,\,{{[Ar]}^{18}}\,3{{d}^{9}}\]. Cu (I) has all filled orbitals and is diamagnetic in nature. On the other hand, Cu (II) has one half-filled orbital and is paramagnetic in nature.


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