Read the passage given below to answer questions:
Most of haloalkanes and haloarenes react with certain metals to give compound containing carbon metal bonds called organometallic compounds. Grignard reagent is such organomagnesium compound. Grignard reagent can be prepared from halogen derivative of alkanes/arenes with magnesium metal in dry ether. These are highly reactive compounds and react with source of proton to give hydrocarbon. Grignard reagents undergo addition with carbonyl compounds to give corresponding alcohols.
The organometallic compound from the following is:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → H3CMgBr
An organometallic compound has a carbon–metal bond. In methylmagnesium bromide, \( \ce{CH3-Mg-Br} \), the carbon of the methyl group is bonded directly to magnesium; it is a Grignard reagent.
Why the other options are incorrect
Option (1) CH3COOAg — Incorrect. Silver acetate: the metal is bonded to oxygen, not carbon; it is a salt.
Option (2) H3CCOONa — Incorrect. Sodium acetate: Na is bonded to oxygen; a salt of an acid.
Option (4) C6H5ONa — Incorrect. Sodium phenoxide: Na is bonded to oxygen; a salt of phenol.
NCERT (2026-27 edition):
Reaction with Metals
