d
Ferrocene was the first organometallic compound discovered by \(G\). Wilkinson in \(1957\). The bonding in these aromatic sandwich type structure is better considered as \(\pi -\) bonding involving the lateral overlap of \(d_{xz}\) and \(d_{yz}\) orbitals on \(Fe\) with the delocalized \(\pi -\) aromatic orbital from each cylopentadienyl ring. All the five \(C-\) atoms are equidistant from \(Fe\). Hence all of these statements are true.