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Today it is all about ions. What are ions, how are they formed what is ionic bonding and how we can describe the formation of ionic bonds:
This lesson covers the spec:
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Describe the formation of ions by electron loss or gain
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Describe the formation of ionic bonds between elements from Groups I and VII.
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Describe the formation of ionic bonds between metallic and non-metallic elements to include the strong attraction between ions because of their opposite electrical charges* ( Higher Level)
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Describe the lattice structure of ionic compounds as a regular arrangement of alternating positive and negative ions, exemplified by the sodium chloride structure* ( Higher Level)
I find this a curious place in the course to deal with ionic bonds - before having gone through the periodic table of elements. The previous lesson does deal with orbitals and electron configuration , but logically I would prefer to move onto the Periodic Table after this. Anyway I have tried to also explain a little about Group 1 and Group 7 elements- however this may be confusing for those who have limited knowledge of the periodic table of elements.
The PowerPoint goes over the basics as per the Spec but also included is a work sheet/homework page with solutions for the students to work on.
My advice is to practice these dot and cross diagrams as much as possible and at the end of this lesson students should be able to draw the bonds between NaCl, MgCl, KF LiCl MgF2 and CaO
then when it comes to learning about the Periodic Table it will fall into place!
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