anonymous
  • anonymous
how to determine the elements that are expanded octet and incomplete octet?
Chemistry
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
do you mean in general or from a lewis diagram or...
anonymous
  • anonymous
for the lewis diagam
anonymous
  • anonymous
ok, well first you know what the octet rule is right?

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anonymous
  • anonymous
yea..I understand that one
anonymous
  • anonymous
elements of period 3 and above can expand their valence shells to include extra lone pairs or bonded pairs
anonymous
  • anonymous
but incomplete octet - in your course or book, do they mean the other exceptions to the octet rule (there aren't enough valence elctrons or there are odd numbers)?
anonymous
  • anonymous
in any case, you can always count the number of valence electrons and bond pairs and see if anything is different than it should be
anonymous
  • anonymous
too little = incomplete (many things with Al, Be, B) and "free radicals" to many = expanded (ICl4, phosphorus (PCl5)
anonymous
  • anonymous
i have to go, maybe this would help http://chemed.chem.wisc.edu/chempaths/GenChem-Textbook/Exceptions-to-the-Octet-Rule-573.html good luck
anonymous
  • anonymous
oh...thank you!

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