Chemistry - ORGANOMETALLIC COMPOUNDS Question with Solution | TestHub

An organic compound B is formed by the reaction of ethyl magnesium iodide $\left({\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{MgI}\right)$ with a substance A, followed by treatment with dilute aqueous acid. Compound B does not gives green color with ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$. Identify A?