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MHT CET202124 Sep 2021Evening ShiftChemistryd and f Block ElementsActual

Which among the following cations will not form coloured compounds? (Atomic number Cu =29, Ti =22, ~V =23, Mn =25 )

Options

  1. AV ³⁺
  2. BTi ³⁺
  3. CCu ⁺
  4. DMn ²⁺

Correct answer

C. Cu ⁺

Step-by-step solution

Cu ⁺ ion will not form coloured aqueous solution as it does not contain unpaired electrons. Cu ⁺ ion with 3 ~d ¹⁰ outer electronic configuration has zero unpaired electrons.

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