Classification of amines: 1°, 2°, 3°ऐमीनों का वर्गीकरण: 1°, 2°, 3°Classification of amines: 1°, 2°, 3°

Class 12 Chemistry · Chapter 9 · interactive diagram

Parts and what they mean

• Ammonia, NH₃ (अमोनिया, NH₃) — Amines are derivatives of ammonia.
• Primary amine (1°), R–NH₂ (प्राथमिक ऐमीन (1°), R–NH₂) — One H of NH₃ replaced by R or Ar: RNH₂ / ArNH₂.
• Secondary amine (2°), R–NH–R′ (द्वितीयक ऐमीन (2°), R–NH–R′) — Two H of NH₃ (or one H of R–NH₂) replaced by alkyl/aryl groups.
• Tertiary amine (3°), R₃N (तृतीयक ऐमीन (3°), R₃N) — All three H of NH₃ replaced. No H left on N.
• Number of H atoms on N (N पर H परमाणुओं की संख्या) — This number decides many reactions: carbylamine test (1° only), Hinsberg test, acylation (1° and 2° only).
• Simple amine (सरल ऐमीन) — All alkyl/aryl groups on N are the same.
• Mixed amine (मिश्रित ऐमीन) — The groups on N are different, e.g. N-methylethanamine.
• Quaternary ammonium salt, R₄N⁺X⁻ (चतुष्क अमोनियम लवण, R₄N⁺X⁻) — Final product of exhaustive alkylation; used as surfactants (NCERT intro).

Original diagram drawn by Simple Learning Hub, based on the NCERT textbook. Report a mistake