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NEET levelSingle correct optionDifficulty 1 of 3cc173

Pentacarbonyliron(0), $Fe (CO) X_{5}$ , has which shape?

Aoctahedral
Btrigonal bipyramidal
Ctetrahedral
Dsquare planar

Answer: B

Fe(0) has the configuration

3 d^{8}

after rearrangement of the

4 s

electrons. One

3 d

, one

4 s

and three

4 p

orbitals hybridise to give

d s p^{3}

. This corresponds to a trigonal bipyramidal shape.

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