Which of the following species show synergic | vedclass

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(D) Synergic bonding occurs in metal carbonyls and metal cyanides where there is a donation of electron density from the ligand to the metal ($L \righ

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All above species have synergic bonding

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(D) Synergic bonding occurs in metal carbonyls and metal cyanides where there is a donation of electron density from the ligand to the metal ($L \rightarrow M$ $\sigma$-bond) and a back-donation of electron density from the metal to the empty antibonding $\pi^*$ orbitals of the ligand ($M \rightarrow L$ $\pi$-bond). $1$. $[Mo(CO)_6]$ is a metal carbonyl complex that exhibits this synergic bonding. $2$. $[Mn(CO)_6]^-$ is an anionic metal carbonyl complex that also exhibits this synergic bonding. $3$. $[Ni(CN)_4]^{4-}$ is a metal cyanide complex where $CN^-$ acts as a $\pi$-acceptor ligand,exhibiting synergic bonding similar to $CO$. Therefore,all the given species show synergic bonding.

Which of the following species show synergic bonding?

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