Ionic Or Electrovalent Bond
Chapter Name : Chemical Bonding And Molecular Structure |
Sub Topic Code : 102_11_04_03_01 |
Topic Name : Ionic Or Electrovalent Bond |
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Sub Topic Name : Ionic Or Electrovalent Bond |
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Introduction
• Ionic bonds form when transfer of electrons takes place between atoms. • Ion bonds will be formed more easily between elements with comparatively low ionization enthalpies, and elements with comparatively high negative value of electron gain enthalpy.
Pre-Requisites:
Chemical bond, Octet rule, ions, electron affinity, electron gain enthalpy.
Activity:
Observe how ionic bonds form between elements giving rise to ionic compounds e.g. NaCl. Common salt.
Real Life Question:
How do Na and Cl combine to form common salt?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| ion | And ion is formed when it loses or gains an electron. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Pebbles | Use pebbles to figure the number of valence electrons and formation of ions. E.g. Na+ and Cl- |
Real life uses :
Ionic bond helps atoms to bond together producing molecules.
Places to visit :
kitchen
Practical examples around us
| Examples | Explainations |
|---|---|
| Common salt | Sodium chloride is formed due to formation of ionic bond between sodium and chloride. |
What you learn in Theory:
Ionic bonds form by the transfer of electrons depending on the electron gain enthalpy and the electro-negativities of atoms.
What you learn in Practice:
Ionic bonds form when electron transfer takes place between atoms.