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Drawing Lewis Structures from Lewis Symbols: A Direct Electron-Pairing Approach
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Abstract
We describe a different, more student-friendly approach to writing Lewis structures for covalent molecules and ions based on Lewis theory and Abegg's rule. Several rules for selecting central atoms are provided. Separate sets of rules are provided for diatomic molecules and ions and for polyatomic molecules and ions. For polyatomic species, we distinguish between cases where surrounding atoms are monovalent and cases where there is at least one polyvalent ligand atom. Examples are given to illustrate these rules.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Domain):
Inorganic ChemistryKeywords (Subject):
Molecular Properties / StructureCiting Articles
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This article has been cited by 4 ACS Journal articles (4 most recent appear below).
Lost in Lewis Structures: An Investigation of Student Difficulties in Developing Representational Competence
Melanie M. Cooper, Nathaniel Grove and Sonia M. Underwood, Michael W. KlymkowskyJournal of Chemical Education2010 87 (8), 869-874Lost in Lewis Structures: An Investigation of Student Difficulties in Developing Representational Competence
Melanie M. Cooper, Nathaniel Grove and Sonia M. Underwood, Michael W. KlymkowskyJournal of Chemical Education2010 87 (8), 869-874Because Lewis structures provide a direct connection between molecular structure and properties, the ability to construct and use them is an integral component of many chemistry courses. Although a great deal of time and effort has been dedicated to ...
Valence, Oxidation Number, and Formal Charge: Three Related but Fundamentally Different Concepts
Gerard ParkinJournal of Chemical Education2006 83 (5), 791Valence, Oxidation Number, and Formal Charge: Three Related but Fundamentally Different Concepts
Gerard ParkinJournal of Chemical Education2006 83 (5), 791Terms such as valence, oxidation number, coordination number, formal charge, and number of bonds are widely used throughout chemistry. Although each of these terms has a distinct meaning, their utility is lessened by imprecise usage. Valence, for example, ...
Correct Bond Order Assignment in a Molecular Framework Using Integer Linear Programming with Application to Molecules Where Only Non-Hydrogen Atom Coordinates Are Available
Matheus Froeyen and Piet HerdewijnJournal of Chemical Information and Modeling2005 45 (5), 1267-1274Correct Bond Order Assignment in a Molecular Framework Using Integer Linear Programming with Application to Molecules Where Only Non-Hydrogen Atom Coordinates Are Available
Matheus Froeyen and Piet HerdewijnJournal of Chemical Information and Modeling2005 45 (5), 1267-1274We describe a method based on linear programming, for deducing the correct bond orders in small molecules, which only needs the sigma bonds connectivity and atom symbols as input. The procedure checks whether the current structure can be written as a ...
The Role of Lewis Structures in Teaching Covalent Bonding
S. R. LoganJournal of Chemical Education2001 78 (11), 1457The Role of Lewis Structures in Teaching Covalent Bonding
S. R. LoganJournal of Chemical Education2001 78 (11), 1457The approach of G. N. Lewis to the sharing of electrons between atoms in what came to be called the covalent bond was, in advance of the discovery of quantum theory, a piece of profound chemical intuition. In the light of the various advances since that ...
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History
- Received: August 03, 2009
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