CUET and UG exam MHT CET Mock Test Series 2025 Chemistry Coordination Compounds

Which of following coordinate complexes is an exception to EAN rule ? (Given Atomic Number: \(Pt = 78, Fe = 26, Zn = 30, Cu = 29\))

1
\([Pt(NH_3)_6]^{4+}\)
2
\([Fe(CN)_6]^{4-}\)
3
\([Zn(NH_3)_4]^{2+}\)
4
\([Cu(NH_3)_4]^{2+}\)
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