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Figuring out the Lewis Structure

Posted: Sun Nov 03, 2019 7:22 pm
by AryaG_4C
I am not entirely sure if its just associated to this topic but how exactly are we supposed to know that in a compound for eg NH4Cl we have to dissociate NH4 and Cl as its a salt and then draw the specific Lewis Structures? Basically when do we know it's not a covalent i.e sharing of electrons between the elements?

Re: Figuring out the Lewis Structure

Posted: Sun Nov 03, 2019 7:29 pm
by Milisuryani Santoso 1L
For me, I think it's easier just to have a grasp of the most common polyatomic ions and look out for those in the chemical formulas given to you. If there is an ion in it, then it forms an ionic bond and if none, it's covalent.

Re: Figuring out the Lewis Structure

Posted: Sun Nov 03, 2019 7:38 pm
by Varadhan_3G
Also for salts (like NH4Cl), we can assume their complete dissociation! :)

Re: Figuring out the Lewis Structure

Posted: Sun Nov 03, 2019 11:17 pm
by Jessica Chen 2C
Covalent bonds are typically between two nonmetals (right side of periodic table), while ionic bonds are between a metal and a nonmetal, so be sure to keep that in mind too!