Answer
Indeed, Grignard reagents are highly flammable in nature. These organometallic compounds, comprised of a magnesium atom bonded to an alkyl or aryl group, readily react with oxygen and moisture present in the air. This inherent reactivity renders them pyrophoric, meaning they can spontaneously ignite upon exposure to the atmosphere. To ensure safe handling, Grignard reagents are typically prepared and used under an inert atmosphere such as nitrogen or argon.