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What is the geometry of pentacarbonyliron(0)?

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in Chemistry – Class 12 by (188k points)
What is the geometry of pentacarbonyliron(0)?

(a) Square planar

(b) Tetrahedral

(c) Trigonal bipyramidal

(d) Octahedral

This question was addressed to me in examination.

This intriguing question originated from Bonding in Metal Carbonyls in chapter Coordination Compounds of Chemistry – Class 12

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The correct option is (c) Trigonal bipyramidal

The explanation is: The coordination number of pentacarbonyliron(0) is 5 as CO is a unidentate ligand and hence its geometry id trigonal bipyramidal.

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