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Topic: What does this mean???  (Read 3172 times)

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Offline lutesium

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What does this mean???
« on: May 31, 2009, 08:57:45 AM »
Dear Sir/Ma'am

This table has puzzled my mind! What does he mean by telling that F-F bond's disassociation energy is 38 (kcal/mol) which is between the ones of Br-Br and I-I and just above I-I??? Why doesn't he follow a regular scheme???


Lutesium...
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Offline Promedol

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Re: What does this mean???
« Reply #1 on: May 31, 2009, 12:34:30 PM »
Quote from: lutesium on May 31, 2009, 08:57:45 AM
This table has puzzled my mind! What does he mean by telling that F-F bond's disassociation energy is 38 (kcal/mol) which is between the ones of Br-Br and I-I and just above I-I??? Why doesn't he follow a regular scheme???
Everything is right. But I think only quantum chemist can explain you this fenomena =)
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Offline James Newby

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Re: What does this mean???
« Reply #2 on: May 31, 2009, 12:36:16 PM »
Peter Politzer J. Am. Chem. Soc., 1969, 91 (23), pp 6235–6237 has the answer if you can get hold of the journal.  Try looking in an inorganic textbook the answer is bound to be there.

If not try drawing out the covalent dot-and-cross diagram of F2 and have a think about what is going on
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Offline gfunk

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Re: What does this mean???
« Reply #3 on: May 31, 2009, 01:06:36 PM »
The scheme they use follows the periodic table (i.e. by weight).
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