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Tertiary halides react the slowest in S_N₂ reactions due to steric hindrance. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
Methylamine ( CH₃NH₂ ) has a lone pair on nitrogen, enabling it to act as a nucleophile in an S_N₂ reaction with CH₃CH₂Br to form CH₃NHCH₂CH₃, a property noted in the PDF.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Chemical Bonding, Topic: Hybridization of nitrogen in CH₃NH₂, sp³ hybridization, pyramidal geometry.
Primary alkyl halides react fastest in the S_Nâ‚‚ mechanism due to low steric hindrance. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.
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
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