Which of the following complex ions does satisfy the effective atomic number (EAN) rule?

Which of the following complex ions does satisfy the effective atomic number (EAN) rule?
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Which of the following complex ions does satisfy the effective atomic number (EAN) rule? A. `[Pt(NH_(3))_(4)]^(2+)` ... ^(2-)` D. `[Fe(CN)_(6)]^(3-)`
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