Chemistry - Coordination Chemistry Question with Solution | TestHub

The question refers to reactions involving compounds 'X' and 'Y'. Without the specific reactions, we infer 'X' is likely Ni(CO)₄ (Nickel Tetracarbonyl) and 'Y' is Ferrocene, Fe(${\eta }^5$-C₅H₅)₂.

A. 'X' is heated for decomposition to produce pure Ni metal and CO.

This describes the Mond process for purifying nickel, where Ni(CO)₄ decomposes to Ni and CO. This statement is CORRECT.

B. 'X' is act as a strong reducing agent.

Ni(CO)₄ is a neutral complex and generally not considered a strong reducing agent. It's more known for its role in the Mond process and as a source of Ni(0). This statement is INCORRECT.

C. 'Y' is a sandwich-like structure which contains metal-ligand bond between a metal (Fe) and the $\pi$ orbitals of C₅H₅⁻.

This describes ferrocene, Fe(${\eta }^5$-C₅H₅)₂, a classic example of a sandwich compound where the Fe atom is bonded to the $\pi$ electron system of two cyclopentadienyl anions. This statement is CORRECT.

D. 'X' and 'Y' both are organometallic compounds.

Ni(CO)₄ (X) is a metal carbonyl, which is an organometallic compound. Ferrocene (Y) is also an organometallic compound. This statement is CORRECT.

The final answer is $\boxed{B}$