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The Chemical Educator

ISSN: 1430-4171 (electronic version)

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Abstract Volume 8 Issue 3 (2003) pp 177-181

Bonding in an Antibonding Orbital

Henry E. Montgomery, Jr.,* and L.L. Tankersley

Centre College, 600 West Walnut Street, Danville, KY 40422-1394, and Department of Physics, United States Naval Academy, Annapolis, MD 21402
Received January 30, 2003. Accepted May 8, 2003

Published online: 23 May 2003

Abstract. The antibonding 2psustate of the hydrogen molecular ion is modeled by adding an atomic polarizability correction to the molecular orbital treatment. With this addition, the 2psu state is shown to be bonding at internuclear separations greater than 10.55 a0. The WKB phase integral method is introduced and used to estimate the number of vibrational and rotational bound states and their energies.

Key Words:  In the Classroom; physical chemistry; quantum mechanics

(*) Corresponding author. (E-mail:

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Issue date: June 1, 2003

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