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Which of the following ions is coloured...

Which of the following ions is coloured

A

`Cu^(+)`

B

`Cu^(2+)`

C

`Ti^(4+)`

D

`V^(5+)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Cu^(2+)rarr 3d^(9)4s^(0)`
1 unpaired `e^(-).`
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