What is the shape of Fe(CO)₅ molecule and which of the following d-orbital s involved in hybridization?

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Tetrahedral $d_{x^{2} - y^{2}}$

$Trigonal bipyramidal, d_{z}^{2}$

Square pyramidal

Trigonal bipyramidal, $d_{x^{2} - y^{2}}$

answer is C.

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Detailed Solution

CO is strong field ligand therefore causes pairing of electron ; finally one ‘3d’ orbital, one ‘4s’ orbital and three ‘4p’ orbital will involve in Hybridisation and the hybridisation is dsp³and Geometry is Trigonal Bi pyramidal. if three ‘p’ orbital involves the d orbital is d_z² ; if two 'p' orbital involves , the d orbital involves is dx²-y².

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