Cuprous ion is colourless, while cupric ion is coloured because [EAMCE

1.	Cuprous ion is colourless, while cupric ion is coloured because [EAMCET 1992; BHU 2002]
A.	Both have unpaired electrons in \[d\]-orbital
B.	Cuprous ion has a completed \[d\]-orbital and cupric ion has an incomplete \[d\]-orbital
C.	Both have half-filled \[p\]and \[d\]-orbitals
D.	Cuprous ion has incomplete \[d\]-orbital and cupric ion has a completed \[d\]-orbital
Answer» C. Both have half-filled \[p\]and \[d\]-orbitals

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Cuprous ion is colourless, while cupric ion is coloured because [EAMCET 1992; BHU 2002]

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