Which of the following complex ion is not expected to absob visible light ?

Which of the following complex ion is not expected to absob visible light ?
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Which of the following complex ion is not expected to absob visible light ? A. `[Ni(H_(2)O)_(6)]^(2+)` B. `[Zn( ... (3+)` D. `[Fe(H_(2)O)_(6)]^(2+)`
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