fairylight Posted November 16, 2005 Share Posted November 16, 2005 how do i work out Zeff in He if i have the first ionization energy - 2372kJ/mol and the ionization energy for He+ - 5250kJ/mol. i know that IE is proportional to Zeff squared, but surely i cant work out the actual value for Zeff with only this information???? im really confused! Link to comment Share on other sites More sharing options...
BhavinB Posted November 16, 2005 Share Posted November 16, 2005 There is a quantum mechanical derivation of Zeff based on screening potentials of electron clouds. I don't have the actual equation on me right now, but its a nasty integral. B Link to comment Share on other sites More sharing options...
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