{"title":"Revisiting Electronegativity and Electronegativity Scales","authors":"Peter F. Lang*, ","doi":"10.1021/acs.jchemed.4c0135310.1021/acs.jchemed.4c01353","DOIUrl":null,"url":null,"abstract":"<p >The concepts of electronegativity and classical electronegativity scales are briefly described. Electronegativity scales have practical quantitative applications, and this work suggests activities which can assist students select the scales for use in chemistry applications. It provided examples of the use of an appropriate electronegativity scale, for estimating bond lengths, bond dissociation energies, and dipole moments. Expressions are introduced for estimating internuclear distances in ionic, covalent, and intermetallic compounds and bond dissociation energies. Estimated values of bond lengths, bond energies, and dipole moments using different electronegativity scales are compared with experimental values and show that the levels of performance are not the same for different electronegativity scales. Additional proposed activities are included.</p>","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"102 1","pages":"424–429 424–429"},"PeriodicalIF":2.5000,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.jchemed.4c01353","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Education","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jchemed.4c01353","RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The concepts of electronegativity and classical electronegativity scales are briefly described. Electronegativity scales have practical quantitative applications, and this work suggests activities which can assist students select the scales for use in chemistry applications. It provided examples of the use of an appropriate electronegativity scale, for estimating bond lengths, bond dissociation energies, and dipole moments. Expressions are introduced for estimating internuclear distances in ionic, covalent, and intermetallic compounds and bond dissociation energies. Estimated values of bond lengths, bond energies, and dipole moments using different electronegativity scales are compared with experimental values and show that the levels of performance are not the same for different electronegativity scales. Additional proposed activities are included.
期刊介绍:
The Journal of Chemical Education is the official journal of the Division of Chemical Education of the American Chemical Society, co-published with the American Chemical Society Publications Division. Launched in 1924, the Journal of Chemical Education is the world’s premier chemical education journal. The Journal publishes peer-reviewed articles and related information as a resource to those in the field of chemical education and to those institutions that serve them. JCE typically addresses chemical content, activities, laboratory experiments, instructional methods, and pedagogies. The Journal serves as a means of communication among people across the world who are interested in the teaching and learning of chemistry. This includes instructors of chemistry from middle school through graduate school, professional staff who support these teaching activities, as well as some scientists in commerce, industry, and government.