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JEE CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES
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Arrange the following free radicals in order of decreasing stability.
Methyl (I), Vinyl (II), Allyl (III), Benzyl (IV)
Methyl (I), Vinyl (II), Allyl (III), Benzyl (IV)
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Correct option: D
IV III I II
Option D (IV III I II) is correct because benzyl is most stable due to resonance, followed by allyl, methyl, and then vinyl due to resonance and hyperconjugation.
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Assertion (A): The compounds that have the same constitution and sequence of covalent bonds but differ in relative positions of their atoms or groups in space are called stereoisomers.
Reason (R): Stereoisomerism is a special type of isomerism which can be classified as geometrical and optical isomerism
Reason (R): Stereoisomerism is a special type of isomerism which can be classified as geometrical and optical isomerism