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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
Which of the following is correct ?
  • A
    $KMnO_4$ violet / purple / dark pink due to $d-d$ transition
  • B
    $TiF_6^{-3}$ and $Cu_2Cl_2$ both are colorless
  • C
    $AgCl,\,CrO_2Cl_2$ Color due to polarisation
  • ✓
    $[Co(NH_3)_6]^{2+}\, <\, [Co(H_2O)_6]^{+2}$ absorbs light at higher $\lambda $
✓

Answer

Correct option: D.
$[Co(NH_3)_6]^{2+}\, <\, [Co(H_2O)_6]^{+2}$ absorbs light at higher $\lambda $
d

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