NEET ChemistryClass 12Stereochemistry of substitutionMediumAssertion–Reason

Optically active (R)-2-bromobutane is treated with hydroxide ion under conditions that favour the SN2 mechanism. Judge the Assertion (A) and the Reason (R) below.

Assertion (A): The butan-2-ol formed has the inverted configuration.
Reason (R): In SN2, the nucleophile attacks from the side opposite the leaving group, and as the new bond forms the other three groups on that carbon swing over to the other side.

More NEET Chemistry chapters

Chemical Bonding and Molecular Structure9 questions Classification of Elements and Periodicity in Properties10 questions Equilibrium9 questions Hydrocarbons10 questions

© 2026 Lumi (Aikolumi Software Pvt Ltd). Original questions written by Lumi. Free to view and practise on this site. Copying, republishing or reproducing these questions, options or solutions, in print or online, is not permitted.

Optically active (R)-2-bromobutane is treated with hydroxide ion under conditions that favour the SN2 mechanism. Judge the Assertion (A) and the Reason (R) below.

Practising is step one. Knowing what to practise next is the hard part.