Finely divided iron combines with $CO$ to give

Select the $IUPAC$ name for the complex $Fe(C_5H_5)_2$.

Back bonding is involved in which of the following organometallic compounds?

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$: The metal-carbon bond in metal carbonyls possesses both $\sigma$ and $\pi$ character.
Reason $(R)$: The ligand-to-metal bond is a $\sigma$ bond and metal-to-ligand bond is a $\pi$ bond.
In the light of the above statements,choose the most appropriate answer from the options given below :

Which of the following is an oxidizing agent?

Discuss the nature of bonding in metal carbonyls.