1.

Fe_(2)(CO)_(9) is diamagnetic. Which of the following is the correct reason ?

Answer»

One CO is present as BRIDGE group
CO is a `pi`-ACCEPTOR ligand
CO can form `pi`-bond with Fe by BACK bonding
Metal-metal (Fe-Fe) bonding TAKES place.

Solution :Metal-metal bonding pairs up the UNPAIRED electron.


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