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Aldehydes are more reactive than ketones: CH₃CHO (aldehyde) > CH₃COCH₃ (simple ketone) > C₆H₅COCH₃ (aromatic ketone, steric hindrance).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Physical Properties and Nucleophilic Addition Reactions
Aldehydes are more reactive than ketones due to less steric hindrance and greater electrophilicity: CH₃CHO > C₆H₅CHO (aromatic, less reactive) > CH₃COCH₃.
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Physical Properties and Nucleophilic Addition Reactions
Reactivity in free radical halogenation decreases with bond strength: F₂ > Cl₂ > Br₂ > I₂ .
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Nucleophilic Substitution Reactions - SN1 and SN2 Mechanisms
SN₂ reactivity increases with better leaving group ability: CH₃CH₂I > CH₃CH₂Br > CH₃CH₂Cl > CH₃CH₂F .
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes
SN₁ reactivity depends on carbocation stability: tertiary > secondary > primary.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Classification and Nomenclature and Isomerism of Haloalkanes
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