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Electron Affinities

  1. Jul 1, 2010 #1


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    Hello there

    I am trying to find the electron affinities higher than one for the iodine, carbon and hydrogen atoms?
    X n- where X is I , C and H and n>1
    Is there any ideas?

    Thank you in advance
  2. jcsd
  3. Jul 2, 2010 #2


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    They don't exist! There is hardly any atom which manages to bind two additional electrons in the gas phase, not even oxygen.
  4. Feb 19, 2012 #3
    my book says oxygen can, and states it to be +844 kilojoules per mol
  5. Feb 20, 2012 #4


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    This only means that formation of O2- is a highly endothermic process and that it is not stable.
  6. Feb 20, 2012 #5


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    OP, you might want to have a look at this article to get some more information on the (few) existing dianions:


    the article is actually quite mind-bending in its own right.
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