Skip to main content
Super TutorResources
Chapter 7 of 9
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Revision Notes

Chemical Bonding and Molecular Structure

CBSE · Class 11 · Chemistry

Quick revision notes for Chemical Bonding and Molecular Structure — CBSE Class 11 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

67 questions72 flashcards5 concepts

Interactive on Super Tutor

Studying Chemical Bonding and Molecular Structure? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for revision notes and more.

Try Super Tutor — Free

1,000+ Class 11 students started this chapter today

Key Topics to Revise

1

1. Nature of Chemical Bond and Kössel-Lewis Approach

  • A chemical bond is the attractive force that holds atoms, ions, or other constituents together in a chemical species.
  • Kössel and Lewis independently gave a satisfactory electron-based explanation of bonding in 1916.
  • Lewis pictured the atom as a positively charged Kernel with an outer shell that can hold a maximum of eight electrons.
2

2. Ionic or Electrovalent Bond and Lattice Enthalpy

  • An ionic bond forms due to electrostatic attraction between positive and negative ions.
  • Electrovalence is equal to the number of unit charges on the ion.
  • Calcium has electrovalence +2 and chlorine has electrovalence -1.
3

3. Covalent Bond, Lewis Structures, Formal Charge, Resonance and Bond Parameters

  • A covalent bond forms by sharing of electron pair(s) between atoms.
  • A single covalent bond is formed when two atoms share one electron pair.
  • A double bond is formed when two atoms share two pairs of electrons.
4

4. Polarity, Dipole Moment and Fajans' Rules

  • A polar covalent bond has unequal sharing of electrons.
  • Dipole moment is a vector quantity and depends on both bond polarity and molecular shape.
  • Dipole moment is zero in symmetric molecules such as BeF2 and BF3 because bond dipoles cancel.

Get complete notes with diagrams and examples

Full Notes

Key Concepts

A chemical bond is the attractiveKössel and Lewis independently explained bondAtoms form bonds to achieveLewis symbols show valence electrons asFormal charge is a bookkeeping tool

Frequently Asked Questions

What are the important topics in Chemical Bonding and Molecular Structure for CBSE Class 11 Chemistry?
Chemical Bonding and Molecular Structure covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Chemical Bonding and Molecular Structure — CBSE Class 11 Chemistry?
Understand the core concepts first, then work through the 67 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Chemical Bonding and Molecular Structure

All 9 chapters — CBSE Class 11 Chemistry Revision Notes

For serious students

Get the full Chemical Bonding and Molecular Structure chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 11 Chemistry.

Try Super Tutor Free
Try the full chapter — Free