Prev. Article Next Article Table of Contents

Article

The Mendeleev-Seaborg Periodic Table: Through Z = 1138 and Beyond

Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Paul J. Karol

Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213

J. Chem. Educ., 2002, 79 (1), p 60

DOI: 10.1021/ed079p60

Publication Date (Web): January 1, 2002

Abstract

Since the mid-18th century, a new element has been discovered on the average of every two-and-a-half years. Hypothetically extending the periodic table beyond its current seventh row is discussed from several perspectives. For heavier elements, relativistic effects confound anticipated electron configurations. Nevertheless, it is suggested that the shell-partitioned display format (spdf) following Mendeleev and Seaborg be continued. Second, the tendency of higher atomic number elements to not survive long enough to be meaningful is addressed with the liquid drop model, including simplified discussions of binding energy and fissionability that for simplicity's sake neglect shell effects. The model provocatively suggests that astronomically large "nuclei" would be stable.

Keywords (Audience):

High School / Introductory Chemistry

Keywords (Domain):

Inorganic Chemistry

Keywords (Subject):

Atomic Properties / Structure

View: Hi-Res PDF | PDF w/ Links

Citing Articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 1 ACS Journal articles (1 most recent appear below).

Theoretical Basis and Correct Explanation of the Periodic System: Review and Update
W. H. Eugen Schwarz, Ronald L. Rich
Journal of Chemical Education2010 87 (4), 435-443
- Theoretical Basis and Correct Explanation of the Periodic System: Review and Update
  W. H. Eugen Schwarz, Ronald L. Rich
  Journal of Chemical Education2010 87 (4), 435-443
  Long-standing questions on the theoretical basis of the periodic system have been answered in recent years. A specific type of periodicity is imposed on all elements by the main groups just before and after the noble gasses. The upper np shells of these ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links