Grignard reagent (RMgX) is prepared by:
AReaction of alcohol with Mg
BReaction of alkyl halide (R-X, X = Cl, Br, I) with Mg metal in dry ether
CReaction of carboxylic acid with Mg
DReaction of alkene with Mg
Answer & Solution
Correct answer: B. Reaction of alkyl halide (R-X, X = Cl, Br, I) with Mg metal in dry ether
**Grignard reagent formation**: R-X + Mg → RMgX in **dry ether** (or dry THF). The carbon-Mg bond is polar covalent (Cδ⁻ – Mgδ⁺), while Mg-X is ionic. Discovered by Victor Grignard (1900); Nobel Prize 1912.
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