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