Which of the following ligands does not act a | vedclass

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Question

(C) $\pi$-acid ligand (or $\pi$-acceptor ligand) is a ligand that can accept electron density from the metal atom into its vacant $\pi$ or $\pi^*$ orb

Vedclass · Accepted Answer

$O_2^{2-}$

Vedclass · Answer

(C) $\pi$-acid ligand (or $\pi$-acceptor ligand) is a ligand that can accept electron density from the metal atom into its vacant $\pi$ or $\pi^*$ orbitals.$N_2$,$CO$,and $C_2H_4$ possess vacant $\pi^*$ antibonding molecular orbitals,allowing them to act as $\pi$-acid ligands.However,the peroxide ion $O_2^{2-}$ has a filled $\pi^*$ antibonding molecular orbital and lacks vacant orbitals of appropriate energy to accept electron density from the metal.Therefore,$O_2^{2-}$ does not act as a $\pi$-acid ligand.

Which of the following ligands does not act as a $\pi$-acid ligand?

Similar Questions

Assign $A, B, C, D$ for the type of observation in the following reaction:
$CuSO_4 + KCN \text{ (excess)} \longrightarrow K_3[Cu(CN)_4] + \frac{1}{2}(CN)_2$

The stability constants for complexes formed by a metal ion $(M^{2+})$ with ligands $NH_3$,$CN^-$,$H_2O$,and $en$ are $10^{11}$,$10^{27}$,$10^{15}$,and $10^8$ respectively. Based on these values,which of the following is correct?

Assertion : The $[Ni(en)_3]Cl_2$ ($en =$ ethylenediamine) has lower stability than $[Ni(NH_3)_6]Cl_2$.
Reason : In $[Ni(en)_3]Cl_2$,the geometry of $Ni$ is trigonal bipyramidal.

The cation that does not form an amine complex with excess of ammonia is

The correct increasing order of trans-effect of the following species is:

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