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Give the number of ligand(s) which is/are non-classical ligand an pi donor as well as pi acceptor ligand CO,PH(3), PF(3),C(3)H(5)^(Θ) ,C(5)H(5) Θ .
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The `pi` acceptor ligands are those which possess vacant `pi-` orbitals in addition to the - YouTube
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inorganic chemistry - Why CO is a stronger and more common ligand than N2? - Chemistry Stack Exchange
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