文章基本信息

标题：Metallic Structure and Bonding
本地全文：下载
作者：Peter F. Lang ; Barry C. Smith
期刊名称：World Journal of Chemical Education
印刷版ISSN：2375-1665
电子版ISSN：2375-1657
出版年度：2015
卷号：3
期号：2
页码：30-35
DOI：10.12691/wjce-3-2-1
语种：English
出版社：Science and Education Publishing
摘要：This article briefly describes the current physical model of metallic structure and bonding. An alternative soft-sphere model of metal structure is introduced. Limitations of the current model are given and properties of metals which can be accounted for by the soft-sphere model are discussed. A simple soft-sphere formula, which calculated internuclear distances of Group 1 and Group 2 crystalline binary salts to a remarkable degree of accuracy, is applied to calculate metallic radii (equal to half the internuclear distances) of Group 1 and Group 2 metals precisely. A simple expression previously used to calculate lattice energies using the soft-sphere radii concept is used to calculate enthalpies of formation of Group 1 and Group 2 metal ions and results compare well with observed values. The work functions of Group 1 and Group 2 metals are shown to be inverse functions of the soft sphere ionic radii.
关键词：metals; metallic bonding; metallic structure; band theory; metallic radii; enthalpy of formation; lattice energies; work function; free electron in metals; electron sea model; chemical bonding