24 public questions tagged with this topic.
In (CH₃)₂NH, nitrogen forms two sigma bonds with carbon atoms and one with hydrogen, totaling three sigma bonds, as per the PDF’s structure discussion.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Carbylamine Reaction and General Reactions
In methylamine (CH₃NH₂), nitrogen forms one sigma bond with carbon and two with hydrogens, totaling three, as per the PDF’s structure.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions - Alkylation, Acylation and Electrophilic Substitution
CH₂=CHC≡CH fits C₅H₆. The fourth carbon (C≡) is sp, with a 180° angle.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Qualitative and Quantitative Analysis - Lassaigne Test and Estimation
In CH₃C≡CH (propyne), there are 6 σ bonds (3 C-H, 1 C-C, 2 from C≡C) and 2 π bonds (from C≡C). Total = 6 + 2 = 8.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography
In CH₃CH₂C≡CH (but-1-yne), there are 9 σ bonds: 5 C-H, 2 C-C, 2 from C≡C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
CH₃CH=CHCH₃ fits C₄H₈ with 10 σ (7 C-H, 2 C-C, 1 from C=C) and 1 π (C=C). The second carbon (CH=) is sp², with a 120° bond angle.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
3 carbons (from 3 CO₂). CH₃C≡CH has 8 σ (6 C-H, 1 C-C, 1 from C≡C) and 2 π (C≡C), and is C₃H₄, producing 3 CO₂ on combustion.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Stereoisomerism - Geometrical and Optical Isomerism
CH₃CH₂CH₂CH₃ (butane) has 13 σ bonds (10 C-H, 3 C-C), more than the others: CH₄ (4), CH₂=CH₂ (5), HC≡CH (3).
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Fundamental Concepts - Reaction Mechanism - Fission and Reaction Intermediates
In CH₃CH₂CH=CH₂ (but-1-ene), there are 11 σ bonds: 8 C-H, 2 C-C, 1 from C=C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance
Two π bonds suggest a diene. CH₂=CH-CH=CH₂ (buta-1,3-diene) has 2 π bonds and 7 σ bonds, fitting C₄H₆.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Classification and Nomenclature of Organic Compounds - IUPAC
In CH₂=CHCH₂CH₃ (but-1-ene), there are 11 σ bonds: 8 C-H, 2 C-C, 1 from C=C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Classification and Nomenclature of Organic Compounds - IUPAC
In CH₂=CH-CH₃ (propene), there are 8 single bonds (C-H and C-C) and 1 double bond (C=C). The double bond consists of 1 σ and 1 π, so total σ bonds = 8 (single) + 1 (from double) = 9.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Classification and Nomenclature of Organic Compounds - IUPAC
