Just preparing for my competition, our teacher barely taught us how to do Lewis structures when the compound isn't electrically neutral, you are really always there to save the day!
@@wbreslyn I was the first viewer. I am currently teaching bonding and I find it all your related video's very useful and students find them very useful too as it is straight to the point and you are left with no confusion.
Thank you (for being first and for using my videos). I started making videos for my students and they helped me understand what helped them the most. I organized my bonding videos on my website at www.breslyn.org/chemistry/bonding/index-bonding.php . --- Dr. B
09:50 For those atoms that can accommodate more than an octet: How can we know _how many_ additional electron pairs can we move towards it and when to stop? I mean, in your sulfate ion example, you kinda got away with it by assuming the charge of the ion. But suppose we don't know that charge yet, and all we know is that there is one sulfur atom and four oxygen atoms surrounding it, and we want to figure out the structure and the charge from it. How can we do that? Oh, and what if the number of valence electrons is an odd number? (as for example, for nitrogen oxides, NO and NO₂)
I may be calculating the formal charge incorrectly, but when I checked the formal charges of the atoms in the first Lewis structure for the sulfate ion, I get a 2- charge for that structure also. If that is correct, I don't understand how formal charges help to sort out which structure is better in this case. I have the sulfur atom with a 2+ charge and the oxygen with a 1- charge (times 4) for a total 4- charge on the oxygen. That adds to an overall charge of 2-.
@@wbreslyn dear sir when you r commentating your words these appear on the screen which hides your writing and drawing structures this was never happen inthe past may be it is the Microsoft policy????
@@abdurrazaq3657Thinking about it, I think you are seeing subtitles. You can turn them off by clicking the little box on the bottom left of the screen that has CC as the text.
