Question

One of the following metals forms a volatile carbonyl compound and this property is taken advantage of for its extraction. This metal is.

• A. Iron
• B. Nickel
• C. Cobalt
• D. Tungston

Answer 1

Answer: (B)

Nickel

Answer 2

Nickel; $Ni + 4CO \rightarrow \lbrack Ni(CO)_{4}\rbrack$ (volatile)