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Q. Shape of $Fe(CO)_5$ is

AIPMTAIPMT 2000Coordination Compounds

Solution:

In $Fe(CO)_5,$ the Fe-atom is in $dsp^3$ hybridised state, therefore the shape of molecule is trigonal bipyramidal.
The hybridisation is as follows : $_{26}Fe = 1s^2, 2s^2 \,2p^6, 3s^2\, 3p^6 \,3d^6, 4s^2 \,4p^)$
In $Fe(CO)_5$, the Fe-atom is

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