The metal for which its property of formation | vedclass

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(B) The metal that forms a volatile compound is $Nickel$,and it is extracted by taking advantage of this property. This process is called vapour phase

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Nickel

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(B) The metal that forms a volatile compound is $Nickel$,and it is extracted by taking advantage of this property. This process is called vapour phase refining,in which the metal is converted into a volatile compound while the impurities remain unaffected.The compound formed later decomposes upon heating to yield the pure metal.In the case of $Nickel$,it is heated in a stream of carbon monoxide to form the volatile nickel carbonyl,$Ni(CO)_4$. This,upon thermal decomposition at a higher temperature $(450-470 \ K)$,yields pure $Nickel$.$Ni_{(s)} + 4CO_{(g)}$ $\rightarrow Ni(CO)_{4(g)}$ $\rightarrow Ni_{(s)} + 4CO_{(g)}$This refining process of $Ni$ is known as the $Mond$ process.

The metal for which its property of formation of a volatile complex is taken into account for its extraction is:

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