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Which is largest in size Cu^(+),Cu^(2+)...

Which is largest in size `Cu^(+),Cu^(2+)` or Cu and why ?

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Cu is largest due to less effective nuclear charge. It has 29 electrons, 29 protons. `Cu^(+)` has 28 electrons and 29 protons, `Cu^(2+)` has 27 electrons and 29 protons [1]
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