03-30-2011 Lecture

03-30-2011 Lecture - Bonding in Homonuclear Diatomic...

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Unformatted text preview: Bonding in Homonuclear Diatomic Molecules Homonuclear Diatomic Molecule: A molecule composed of only two atoms in which both of the bonding atoms are of the same element H 2 , He 2 , Li 2 , Be 2 s-Block Diatomics p-Block Diatomics B 2 , C 2 , N 2 O 2 , F 2 , Ne 2 Bonding in Homonuclear Diatomic Molecules K 2 , P 2 What about homonuclear diatomic molecules of heavier atoms? The MO diagram for diatomics with heavier atoms is similar to those for the lighter atoms Homonuclear Diatomic Molecule: A molecule composed of only two atoms in which both of the bonding atoms are of the same element Bonding in Heteronuclear Diatomic Molecules Heteronuclear Diatomic Molecules: A molecule composed of only two atoms in which the bonding atoms are of different elements Energy * = C A2 (A) C B2 (B) AO with lower energy belongs to more electronegative atom, B. Has larger coefficient for bonding orbital, . Energy stabilization decreases as the energies of (A) and (B) diverge (A) (B) (more electronegative atom) = C A1 (A) + C B1 (B) |C A2 | 2 > |C B2 | 2 |C B1 | 2 > |C A1 | 2 Bonding in Heteronuclear Diatomic Molecules s-s bonding: LiH Heteronuclear Diatomic Molecules: A molecule composed of only two atoms in which the bonding atoms are of different elements Bonding in Heteronuclear Diatomic Molecules...
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This note was uploaded on 10/13/2011 for the course CHEM 101 taught by Professor Fitts during the Fall '08 term at UPenn.

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03-30-2011 Lecture - Bonding in Homonuclear Diatomic...

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