Which of the following employ(s) thermal deco | vedclass

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(C) The $Van-Arkel$ process is a method used for the refining of metals like $Zr$ and $Ti$. In this process,the crude metal is heated in an evacuated

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Van-Arkel's process

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(C) The $Van-Arkel$ process is a method used for the refining of metals like $Zr$ and $Ti$. In this process,the crude metal is heated in an evacuated vessel with iodine to form a volatile metal iodide,such as $ZrI_4$. The metal iodide is then decomposed on a tungsten filament at a higher temperature $(1800 \ K)$ to obtain pure metal. Therefore,the $Van-Arkel$ process employs the thermal decomposition of volatile iodide compounds.

Which of the following employ$(s)$ thermal decomposition of volatile iodide compounds?

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