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Lewis structures of compounds

Posted: Sat Nov 03, 2018 10:36 pm
by Meachelle_Lum_1I
Hi, in Edition 6, Ch 3 question 39, the question states:
Write the complete Lewis structure for each of the
following compounds: (a) ammonium chloride; (b) potassium
phosphide; (c) sodium hypochlorite.

Do we have to know the chemical formula of these? Also, the Lewis structures for these molecules weren't bonded together, but rather separated and then surrounded by ions (like 39b). Is this because these are ionic bonds so lewis structures aren't drawn the same as it would be for a covalent bond?

Re: Lewis structures of compounds

Posted: Sat Nov 03, 2018 11:08 pm
by sameeksha_panda_3h
Hello! Some of these are pretty common compounds so I would try to remember them but it isn't necessary for this class. The compounds would be given. Also, the structures for ionic compounds are different (remember from lecture that if the difference in electronegativity is greater than 2 that the compound is considered ionic in nature).

Re: Lewis structures of compounds

Posted: Sat Nov 03, 2018 11:09 pm
by 904936893
I think that if the question was assigned, it would be better just to understand it, in case a question on molecules comes up. I believe all of those compounds are salts, so it would make sense that the Lewis structures were written like ionic compounds.