Chemistry - Coordination Chemistry Question with Solution | TestHub
ChemistryCoordination ChemistryWerner theory + calculation of EANMedium2 minQB
ChemistryMediummultiple choice
Which of the following complex(es) will show synergic bonding as well as not follow Sidgwick rule of EAN simultaneously.
Options:(select one or more)
Answer:
A, B, C
Solution:
Synergic bonding occurs in ligands like CO, NO⁺, C₂H₄ (π-acceptor ligands) involving σ-donation and π-back donation.
Check each:
(A) K[PtCl₃(C₂H₄)] ethylene shows π back bonding (synergic), and EAN not satisfied → violates EAN
(B) K₃[Fe(CN)₆] CN⁻ shows back bonding but EAN is nearly satisfied → does not clearly violate EAN rule
(C) [Fe(H₂O)₅NO]SO₄ NO ligand shows strong synergic bonding and EAN not satisfied
(D) [Fe(CO)₄]²⁻ CO shows synergic bonding but this complex follows EAN more closely → not included
Stream:JEESubject:ChemistryTopic:Coordination ChemistrySubtopic:Werner theory + calculation of EAN
⏱ 2mℹ️ Source: QB
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