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

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following is expected to form colourless complex
  • A
    $N{i^{2 + }}$
  • ✓
    $C{u^ + }$
  • C
    $T{i^{3 + }}$
  • D
    $F{e^{3 + }}$
✓

Answer

Correct option: B.
$C{u^ + }$
b
(b) In $C{u^{ + 1}}$ (cuprous ion) $d$ orbitals are completely filled so it will form colourless complex.

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