D-And F-Block Elements Ques 291
Question: Which ion is not coloured
[DPMT 2001]
Options:
A) $ C{{r}^{3+}} $
B) $ C{{o}^{2+}} $
C) $ C{{r}^{2+}} $
D) $ C{{u}^{+}} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ C{{u}^{+}} $ do not have any unpaired electron.