MCQ
Which one of the following ions is colourless
- ✓$C{u^ + }$
- B$C{o^{2 + }}$
- C$N{i^{2 + }}$
- D$F{e^{3 + }}$
✓
Answer
Correct option: A.
$C{u^ + }$
a
(a)$C{u^ + } - 3{d^{10}}4{s^0}$; no unpaired ${e^ - }$.
(a)$C{u^ + } - 3{d^{10}}4{s^0}$; no unpaired ${e^ - }$.
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