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Interactive video lesson plan for: Ionic Bonding of Lithium Fluoride & Potassium Oxide | Chemistry for All | FuseSchool

Activity overview:

Learn the basics about the ionic bonding of calcium chloride, lithium fluoride and potassium oxide, as a part of the overall properties of matter topic.

An ionic bond is defined as the electrostatic attraction between oppositely charged ions.

In this video, we will learn about ionic bonding in lithium fluoride (LiF) and potassium oxide (K2O).

Lithium is a Group 1 metal, and will therefore have one electron in its valence shell. Its electronic structure is 2, 1.

Fluorine is a halogen and has seven electrons in its valence shell. Its electronic structure is 2, 7.

Lithium transfers its valence electron to fluorine, forming a Li+ ion and a F- ion.
It is a common misconception that there must be eight electrons in an electron shell for a species to be stable. As long as the electron shell in question is full, it will be stable.

This is seen with lithium – the first electron shell can only hold two electrons, and this shell is full, so a Li+ ion is stable.

Note that it has the same electronic structure as a He atom.

The Li+ ion and the F- ion are oppositely charged, and will be electrostatically attracted to one another, thereby forming an ionic bond.


This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org

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This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. Find our other Chemistry videos here:

https://www.youtube.com/playlist?list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV

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