Question

Shape of $Fe(CO)_5$ is

• A. octahedral
• B. square planar
• C. trigonal bipyramidal
• D. square pyramidal

Answer 1

Answer: (C)

trigonal bipyramidal

Answer 2

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