8 public questions tagged with this topic.
The nitrogen in CH₃NH₂ is sp³ hybridized (3 bonds, 1 lone pair), resulting in a tetrahedral electron geometry, but a bond angle of approximately 107° due to lone pair repulsion.
Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII), Chapter: Chemical Bonding (Latest NCERT 2026-27), Topic: Hybridization of nitrogen in CH₃NH₂, sp³ hybridization and pyramidal geometry
C₂H₂ has a triple bond between carbons, each bonded to one hydrogen, with no lone pairs, resulting in a linear shape with a bond angle of 180°. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.
Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII)Topic: Mole concept, atomic structure, chemical formulas like H₂O, CO₂, CH₃CH₂NH₂ and periodic trends.
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
CH₃CH=CHCH₂ fits C₄H₆ with 9 σ (6 C-H, 2 C-C, 1 from C=C) and 1 π (C=C). The first carbon (CH₃) is sp³, with a 109.5° bond angle.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Structural Isomerism - Chain Position Functional Metamerism
In SF₄ , sulfur is sp³d hybridized with 5 electron pairs (4 bonding, 1 lone), forming a see-saw shape. The axial-equatorial F-S-F bond angle is ~86°, and the equatorial bond angle is ~101°, both reduced due to lone pair repulsion.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Covalent Bonding - Bond Parameters and Polarity and Fajan's Rule
In SF₄ , sulfur is sp³d hybridized with 5 electron pairs (4 bonding, 1 lone), forming a see-saw shape. The equatorial F-S-F bond angle is ~101°, reduced due to lone pair repulsion.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Covalent Bonding - Bond Parameters and Polarity and Fajan's Rule
In trigonal planar geometry, such as in BCl₃ , the bond angle is 120° due to three bonding pairs arranged symmetrically.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Covalent Bonding - Bond Parameters and Polarity and Fajan's Rule
In BrF₅ , bromine is sp³d² hybridized with 6 electron pairs (5 bonding, 1 lone), forming a square pyramidal shape with ~90° bond angles.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Covalent Bonding - Bond Parameters and Polarity and Fajan's Rule
