Cuprous ion is colourless while cupric ion is coloured because [KCET 2

1.	Cuprous ion is colourless while cupric ion is coloured because [KCET 2000]
A.	Both have half filled p and d-orbitals
B.	Cuprous ion has incomplete d-orbital and cupric ion has a complete d-orbital
C.	Both have unpaired electrons in the d-orbitals
D.	Cuprous ion has a complete d-orbital and cupric ion has an incomplete d-orbital
Answer» E.

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Cuprous ion is colourless while cupric ion is coloured because [KCET 2000]

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