The Valence Shell Electron Pair Repulsion Theory
Chapter Name : Chemical Bonding And Molecular Structure |
Sub Topic Code : 102_11_04_05_01 |
Topic Name : The Valence Shell Electron Pair Repulsion Theory |
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Sub Topic Name : Vesper Theory |
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Introduction
• VSEPR theory provides a simple procedure to predict the shapes of covalent molecules. • Explains the shapes of molecules. • Explains the behavior of ions and molecules.
Pre-Requisites:
Covalent bond, ionic bond, molecule
Activity:
Soapy water is able to remove grease and oil from clothes or hands as it is a polar covalent molecule.
Real Life Question:
Why does water when mixed with soap is able to remove grease and oils?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Vsepr theory | • VSEPR theory provides a simple procedure to predict the shapes of covalent molecules. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Soapy water and grease/oil | See what happens when you mix soapy water with oil or greased clothes or hands. |
Real life uses :
Covalent nature of molecules (water) makes them a good solvent.
Places to visit :
Kitchen, bathroom
Practical examples around us
| Examples | Explainations |
|---|---|
| Soap water removes grease | Soapy water removes grease from clothes, hands, utensils as water is a polar molecule. |
What you learn in Theory:
Vsepr theory explains the shapes of covalent molecules.
What you learn in Practice:
Water is a good solvent as it is a polar molecule having covalent bonds.