Solution:
Fe=1s2,2s22p6,3s23p63d6,4s24p0
In Fe(CO)5, the Fe atom is in dsp3 hybridized state. Therefore, the shape of molecule is trigonal bipyramidal. The hybridization is as:
![solution](https://d1hj4to4g9ba46.cloudfront.net/questions/681492_640313_ans_aa676d9d64dd45ffb3d460a557047a1c.jpg)
The correct structure of Fe(CO)5 is (at.no.of Fe = 26)
Fe=1s2,2s22p6,3s23p63d6,4s24p0
In Fe(CO)5, the Fe atom is in dsp3 hybridized state. Therefore, the shape of molecule is trigonal bipyramidal. The hybridization is as: