MCQ
Which ion is not coloured
  • A
    $C{r^{3 + }}$
  • B
    $C{o^{2 + }}$
  • C
    $C{r^{2 + }}$
  • $C{u^ + }$

Answer

Correct option: D.
$C{u^ + }$
d
(d)$C{u^ + }$do not have any unpaired electron.

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