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JEE Main 2022 Chemistry question

ChemistryThe d and f-Block ElementsJEE Main 2022

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

Answer: 3

Solution

(A) is correct: Cu(II) is and always has one unpaired electron. (B) is correct: Cu(I) is , so its complexes are generally colourless. (C) is correct: Cu(I) is easily oxidised to Cu(II) (it

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Question ID VK-034592