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Unformatted text preview: 2p orbital in the cases of B 2 , C 2 , and N 2 (as well as Li 2 and Be 2 considerations). If, however, there are > 3 electrons in the p orbitals of the atoms (as in the case of O through Ne of period 2), then the greater electronic repulsions that result from these greater electronic densities in the p orbitals results in there being no significant 2s2p orbital mixing. This results in the expected energetic order of molecular orbitals where the 2p is lower in energy than the two 2p orbitals, in the cases of O 2 , F 2 , and Ne 2 . So, just keep in mind that when filling molecular orbital electronic configurations for period 2 elements, be sure to fill the 2p orbital before the two 2p orbitals for O 2 , F 2 , and Ne 2 , and be sure to fill the two 2p orbitals before the 2p orbital for B 2 , C 2 , and N 2 (as well as Li 2 and Be 2 considerations)....
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This note was uploaded on 07/15/2011 for the course CHEM 2045 taught by Professor Gower during the Spring '11 term at University of Florida.
 Spring '11
 Gower
 Atomic Orbitals, Mole

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