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Valence Bond Theory
Chapter Name : Chemical Bonding And Molecular Structure
Sub Topic Code : 102_11_04_06_03
Topic Name : Valence Bond Theory
Sub Topic Name : Directional Properties Of Bonds
Introduction

• During bond formation there is partial merging of atomic orbitals called overlapping of atomic orbitals which results in the pairing of electrons. • Greater the overlap the stronger is the bond formed between two atoms.

Pre-Requisites:

Covalent bond, ionic bond, molecule, bond length, orbital

Activity:

Overlapping orbitals are like tomato slices kept in such a way that they overlap.

Real Life Question:

How do covalent bonds form?

Key Words / FlashCards
Key Words Definitions (pref. in our own words)
Covalent bond Covalent bond forms when there is sharing of electrons between two atoms.
Learning aids / Gadgets
Gadgets How it can be used
Ball, dumbbell A ball and a dumb bell are like the s and p orbitals.
Real life uses :

Covalent bond helps to form many molecules e.g. water

Places to visit :

Kitchen, gym, playground

Practical examples around us
Examples Explainations
Dumbbell, slices of tomato Dumbbell is like the shape of a p orbital and like a slices of tomato kept over each other, orbitals overlap in the same way making a bond.
What you learn in Theory:

Covalent bonds are made by the overlapping of atomic orbitals.

What you learn in Practice:

Overlapping of atomic orbitals helps to form many molecules such as water.

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