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4. d and f- block elements — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
If $CdI_2$ is pink in colour, the $CdCl_2$ will be ........... coloured.
  • A
    yellow
  • B
    red
  • C
    blue
  • ✓
    cannot be predicted
✓

Answer

Correct option: D.
cannot be predicted
d
$(d)$ In $CdI_2,$ Pink colour is due to polarization of $I^-$ by $Cd^{2+}$ has  pseudonoble gas configuration. In $CdCl_2,$ extent of polarization of $Cl^-$ by  $Cd^{2+}$ is relatively less, hence specific colour cannot be predicted.

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