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NCERT Exemplar Class 11 Chemistry Chapter 4 Solutions: Chemical Bonding and Molecular Structure

NCERT Exemplar Solutions for Class 11 Chemistry Chapter 4 develop a clear approach to chemical bonding and molecular structure. The main topics of the chapter of NCERT Exemplar Class 11 Chemistry include octet rule, covalent bond, ionic or electrovalent bond, Lattice enthalpy, bond parameters, the valence shell electron pair repulsion theory, valence bond theory, hybridization, molecular orbital theory, hydrogen bonding, and bonding in some homonuclear diatomic molecules.

These solutions prepared by Instasolv are meant for providing in-depth learning. In these NCERT Exemplar Problems with Solutions for Class 11 Chemistry, you will be introduced to a lot of important concepts of Chemical Bonding and Molecular Structure. This will be really helpful for those who wish to continue to study Chemistry as a subject in further classes.

Class 11 Chemistry NCERT Exemplar Chapter 4 has 6 main exercises with around 68 exemplar problems in total. There are different types of questions available for practice including short answer type questions, long answer type questions, and multiple-choice questions based on Chemical Bonding and Molecular Structure. You can follow the NCERT Exemplar solutions for class 11 Chemistry Chapter 4 provided by Instasolv from anywhere and at any time.

Important Topics for NCERT Chemistry Exemplar Solutions Class 11 Chapter 4 – Chemical Bonding and Molecular Structure

Octet Rule

The octet rule defines how atoms of dissimilar elements combine to form molecules. In a chemical formula, the octet rule intensely directs the number of atoms for each element in a molecule. For example, calcium fluoride (CaF2); in these two fluorine atoms and one calcium fulfil the rule.

Ionic or Electrovalent Bond

An ionic bond is also known as an electrovalent bond. It describes the type of linkage created from the electrostatic attraction between oppositely charged ions in a chemical compound. Such bond forms when the valence electrons of one atom are transported permanently to another atom.

Factors Affecting the Formation of Ionic Bond

The three major factors affecting the formation of ionic bond include;

  • Ionization energy
  • Electron affinity
  • Lattice energy

Valence Bond Approach

Valence bond theory is a chemical bonding theory that illustrates the chemical bonding between two or more atoms. The atoms share their unpaired electron to form a filled orbital to form a hybrid orbital and bond together.

VSEPR Model

V VSEPR theory refers to the valence shell electron pair repulsion theory. It is a model used in chemistry to calculate the geometry of separate molecules from the number of electron pairs adjacent to their central atoms.

Hydrogen Bond

The hydrogen bond is a chemical bond between an electronegative atom and the hydrogen atom. For example, water molecules bonding together in the form of ice.

Molecular Orbital Theory

The molecular orbital theory is a technique for relating the electronic structure of molecules using quantum mechanics. Electrons are not allocated to separate bonds between atoms but are considered as moving under the effect of the nuclei in the complete molecule.

Exercise-wise Discussion of NCERT Chemistry Exemplar Solutions Class 11 Chapter 4 – Chemical Bonding and Molecular Structure

Exercise 4.1 – Multiple Choice Questions I

You‘ll find 22 multiple-choice questions in this exercise of Chapter 4. These questions are based on hybridization, molecular orbital theory, hydrogen bonding, and bonding in some homonuclear diatomic molecules.  In these questions, you are required to choose the correct answer out of the four options given.

Exercise 4.2 – Multiple Choice Questions II

This exercise consists of 8 exemplar problems. These are high order thinking questions and will help you improve your analytical skills.

Exercise 4.3 –Short Answer Types Questions

NCERT Exemplar Class 11 Chapter 4 Exercise 4.3 contains a total of 21 questions that are based on the concepts of chemical bonding and molecular structure.

Exercise 4.4 – Match the following

Exercise 4.4 of Chapter 4 contains 5 questions. You have to match options given in column first with the correct answers given in column two.

Exercise 4.5 – Assertion and Reason Type

In this exercise, there are a total of 3 questions in which you have to choose the correct option out of the choices given in each question.

Exercise 4.6 – Long Answer Type Questions

In this exercise of Chapter 4, there are a total of 9 questions that are long answer type questions based on the octet rule, covalent bond, ionic or electrovalent bond, Lattice enthalpy, bond parameters, the valence shell electron pair repulsion theory, valence bond theory.

Why Use NCERT Chemistry Exemplar Solutions Class 11 Chapter 4 – Chemical Bonding and Molecular Structure by Instasolv?

  • The NCERT Exemplar Solutions for Class 11 Chemistry Chapter 4 provided by Instasolv can be practised offline when you follow it once.
  • A complete explanation of each question is given in the solutions and they are written in the simplest language so that you can understand the same with ease.
  • It mostly eradicates the need for any tuition or additional help from teachers.
  • You can easily access these solutions online and start your preparation with ease.
  • Practising these NCERT Exemplar Problems with Solutions will help you prepare for the exams well.