*If you are using Edpuzzle, watch & answer embedded question video (How to Draw Lewis Dot Structure for Ionic Compounds/Bonds) |
*[Youtube Video on Lewis Dot Structure of Ionic Compound] - If Edpuzzle is available, you will watch/take notes thru Edpuzzle file name, 2021LDSIonicCompoundNotesVideo. |
After writing down the name of the ionic compound.
1a) Write down the symbol and charge of cation (first word).
1b) Write down the symbol and charge of anion (2nd word). Write them side by side.
2) Using your know of Naming Ionic Compounds, write the chemical formula.
As the [Example of Work for Lewis Dot Structures for Ionic Compounds] show, I made a separate section to explain how one get LDS for the cation and anion. All metal atoms lose all their valence electrons to make their cations and all anions add valence electrons so their anion has 8 valence electrons around it. Therefore, all cations have no valence electrons around them and anions have 8. Then the [ ] and charge are added.
3) Now the final part of the LDS is to align the correct number of cations and anions (determine by the Rule that all valence electron lost by cation must be taken in by the anions, usually stated as Total "+" charge = Total "-" charge). Then make sure that no 2 same charge ions are next to each other. Easiest way is alternating cation and anion unless next to make crosses for similar charge separation.
Here is: