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Explain why: Cu^(+) " is diamagnetic ...

Explain why:
`Cu^(+) " is diamagnetic but " Cu^(2+)` is paramag netic. `(Z=29)`

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`Cu^(2+)` is paramagnetic but `Cu^(+)` is diamagnetic because `Cu^(2+)` contains unpaired electrons whereas `Cu^(+)` does not have any unpaired electron.
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