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Cuprous ion is colourless, while cupric ...

Cuprous ion is colourless, while cupric ion is colured because

A

both have half filled p and d-orbitals

B

coprous ion has incomplete d-orbital and cupric ion has complete d-orbitals

C

both have unpaired electrons in d-orbitals

D

cuprous ion has a complete d-orbital and cupric ion has an incomplete d-orbitals

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The correct Answer is:
D
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