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  Home > JCE Print > Journal of Chemical Education > Issues > 2002  > January  >
In the Classroom
Tetrahedral Geometry and the Dipole Moment of Molecules
Sara N. Mendiara and L. J. Perissinotti
Departamento de Química,Facultad de Cs. Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, Mar del Plata 7600, Argentina
Cover
January 2002
Vol. 79 No. 1
p. 64
Abstract
We have made a short and simple derivation of the bond angle in tetrahedral compounds. It is based on the knowledge of the permanent dipole moment of molecules. We use geometry, projections, trigonometry, and the bond and dipole moments. We have developed a detailed classroom methodology. We calculate the bond angle of symmetric tetrahedral molecules, where the dipole moment is zero. Afterward, we calculate angles and bond moments in molecules like ammonia and chloromethane.
More Information
*  Citation
 Mendiara, Sara N.; Perissinotti, L. J. J. Chem. Educ. 2002 79 64.
*  Keywords
 Molecular Properties / Structure; Problem-Based Learning; Teaching / Learning Aids
*  History
 Created:
Last Updated:		 December 3, 2001
March 16, 2005
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