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Q. Carbon monoxide forms volatile compound with

UPSEEUPSEE 2019

Solution:

Nickel $(Ni)$ on heating in a stream of carbon monoxide forms a volatile complex, that is nickel tetracarbonyl.
$\underset{\text{Nickel}}{\ce{Ni}}+$ $\underset{\text{Carbon monoxide}}{\ce{HCO}}\ce{->[330-350\,K]}$ $\underset{\text{Nickel tetracarbonyl (volatile compound)}}{\ce{[Ni(CO)4]}}$