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April 21, 2014

Homework Help: chemistry

Posted by hriday on Monday, January 19, 2009 at 7:55am.

the ground stste energy of H- atom is -13.6 eV. the energy needed to ionise H- atom from its second excited state is

1.51 eV
3.4 eV
13.6 eV
12.1 eV

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