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AP EAMCET202125 Aug 2021Evening ShiftChemistryd and f Block ElementsActual

Which of the following compounds is expected to be coloured?

Options

  1. AZnSO ₄
  2. BMgCl ₂
  3. CCuCl ₂
  4. DAgCl

Correct answer

C. CuCl ₂

Step-by-step solution

Copper chloride ( CuCl ₂ ) as a yellow-brown powder (in anhydrous form) or a green crystalline solid (in dihydrate form) due to copper exist as divalent Cu ²⁺ ions with 3 d^9 electronic configuration. Due to presence of 1 unpaired electron in 3 d -orbital, it is coloured. Remaining ZnSO ₄, MgCl ₂ and AgCl are not coloured compounds respectively. Hence, only CuCl ₂ is expected to be coloured.

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