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Which of the following complex ions is e...

Which of the following complex ions is expected to absorb visible light ?
(Atomic Nos : `Sc=21`, `Cr=24`, `Zn=30`, `Cu=29`)

A

`[Sc(NH_(3))_(3)(H_(2)O)_(3)]^(3+)`

B

`[Cr(NH_(3))_(6)]^(3+)`

C

`[Zn(NH_(3))_(6)]^(2+)`

D

`[Cu(CN)_(4)]^(3-)`

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BRILLIANT PUBLICATION-CO-ORDINATION COMPOUNDS AND ORGANOMETALLICS-Level-II
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