MCQ
Which of the following compounds is not coloured ?
- A$Na_2[CuCl_4]$
- ✓$Na_2[CdCl_4]$
- C$Fe_4[Fe(CN)_6]_3$
- Dnone of these
✓
Answer
Correct option: B.
$Na_2[CdCl_4]$
b
$Cd^{+2}$ have no unpaired $e^-$, so colourless
$Cd^{+2}$ have no unpaired $e^-$, so colourless
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