International Year of Chemistry, 2011

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International Year of Chemistry 2011

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The Periodic Table of the Isotopes: First Release

Activity by Norman Holden   |   added on Aug 17, 2011 Official_iyc_logo

Sponsor(s): IUPAC Inorganic Chemistry Division, IUPAC Committee on Chemistry Education

The IUPAC Periodic Table of the Isotopes introduces students, teachers, and society to the existence and importance of isotopes of the chemical elements.

For almost 150 years, the Periodic Table of the Elements has served as a guide to the world of elements by highlighting similarities and differences in atomic structure and chemical properties. To introduce students, teachers, and society to the existence and importance of isotopes of the chemical elements, an IUPAC Periodic Table of the Isotopes (IPTI) has been prepared and can be found here as a supplement (first published in Chem Int. July 2011).

Where the Periodic Table of the Elements indicates the similarities of the properties of chemical elements, the IPTI emphasizes the uniqueness of each element. A unique feature of this periodic table is that it shows the isotopic abundance of each stable isotope of an element in a pie diagram, revealing easily the number of stable isotopes (and their mass numbers) of each element. Color-coded-element cells on the IPTI distinguish between elements having no stable isotopes, one stable isotope, and two or more stable isotopes. The standard atomic weights of the 10 elements assigned as intervals in December 2010 by IUPAC are also clearly designated.

The IPTI is the first outcome of IUPAC project 'Development of an Isotopic Periodic Table for the Educational Community' and is also available from the website of the Commission on Isotopic Abundances and Atomic Weights <www.ciaaw.org>.


Topic: periodic table, isotopes Audience: students, teachers
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