Find Electron Affinities Higher than 1 for I, C & H

[Gab]

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

 

[DrDu]

They don't exist! There is hardly any atom which manages to bind two additional electrons in the gas phase, not even oxygen.

 

[xplosiv3s]

They don't exist! There is hardly any atom which manages to bind two additional electrons in the gas phase, not even oxygen.

my book says oxygen can, and states it to be +844 kilojoules per mol

 

[DrDu]

my book says oxygen can, and states it to be +844 kilojoules per mol

This only means that formation of O2- is a highly endothermic process and that it is not stable.

 

[cgk]

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

http://dx.doi.org/10.1021/jp107177d

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