My Math Forum ICl2 VSEPR, single electrons

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 July 7th, 2015, 01:43 PM #1 Newbie   Joined: Oct 2014 From: Denmark Posts: 11 Thanks: 1 ICl2 VSEPR, single electrons I am preparing for a re-examination, and one of the previous test has the following question: Estimate the VSEPR model of ICl2. This means, I have Iodine in the middle due to the electron negativity, and 21 electrons in total. Using the octet rule I end up with two lone pairs on the Iodine, and a single one, too. Now, according to my teacher's hopefully correct solution, the single electron will act as a lone pair, thus ICl2 will have three lone pairs on the iodine. Is this correct? I can't seem to find anything about single electrons in the VSEPR theory, and I have never heard of ICl2, and can't find a lewis structure of it. Is it safe to consider single electrons as lone pairs always? (Considering I am only doing high-school chemistry)
 July 11th, 2015, 11:51 AM #2 Member     Joined: Oct 2014 From: Colorado Posts: 40 Thanks: 21 Yes, single electrons act as lone pairs. Perhaps your teacher meant it as only practice, however, i'm not certain $ICl_2$ exists in nature. You can also read any edition of "Chemistry: The Molecular Nature of Matter and Change" for more in-depth information about general chemistry. Thanks from Bugge
 July 14th, 2015, 09:56 AM #3 Newbie   Joined: Oct 2014 From: Denmark Posts: 11 Thanks: 1 Hello, and thank you very, very much for your response. Yes, my search for ICl2 had no results either. Also, thanks for the recommendation, but we are already using a book called "General Chemistry", which I feel is quite complete. The problem is my teacher simply hasn't shown how he has solved the tests, he only marks the answer (It is a multiple choice exam), so you never know why he puts the 'x' the way he does. Feels like a curricular minefield.

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### vsepr theory of icl2

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