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The d & f Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe d & f Block Elements1 Mark
MCQ
Which one of the following paramagnetic in nature?
  • A
    CuCl2​
  • B
    CaCl2​
  • C
    CdCl2​
  • D
    All of these.
✓

Answer

  1. CuCl2​

Explanation:

In CuCl2​, Cu is in +2 oxidation state. Electronic configuration of Cu2+ is [Ar],3d9, and is coloured and paramagnetic due to presence of an unpaired electron in the 3d sub-orbital.

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