question_answer

The correct structure of \[Fe{{(CO)}_{5}}\] is

A)  trigonal bipyramidal

B)  octahedral

C)  tetrahedral

D)  square pyramidal

Correct Answer: A

Solution :

In \[Fe{{(CO)}_{5}}\], the Fe atom is in \[ds{{P}^{3}}\] hybridised state. Therefore, the shape of molecule is trigonal bipyramidal. The hybridisation is as \[_{26}Fe=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}3{{d}^{6}},4{{s}^{2}}4{{p}^{0}}\] In \[Fe{{(CO)}_{5}}\] the Fe atom is