Sustainability & Endangered Elements | Chemistry. Description of Contents I. "Rare Earths: Resource Sustainability". Abstract of an article to be published in The Rare Earth Elements: Fundmentals and Applications (October 2012). The article describes the issues related to the unsustainable consumption of the Rare Earths (the lanthanide elements). This is not just a problem of resource depletion. The unique properties of the Rare Earth elements are the basis of a multitude of routine, daily-use products, and are irreplacable components in existing and emerging Green Energy technologies.
II. To obtain a copy of the Endangered Elements Periodic Table (shown below) and to get more information on this subject see: III. A. B. C. IV. I. Chapter in The Rare Earth Elements: Fundamentals and Applications, October 2012 David A. Abstract Keywords: Sustainability, Strategic Elements, Endangered Elements Article Contents: II. Www.rsc.org/images/Endangered Elements - Critical Thinking_tcm18-196054.pdf. Mr. Brunner - Elements WebQuest. Chapter 8, Quiz 1<BLURT> Origin of the Chemical Elements. During the process of stellar evolution nuclear fusion reactions take place within a star. These give rise to the formation of the chemical elements.
Clues to the processes involved may be deduced from the graph below, which shows the cosmic abundances of elements (y-axis) plotted against atomic number (x-axis). The abundances are measured relative to 1 million silicon atoms and the y-axis is a logarithmic scale. In this case the data are for the solar-system and abundances have been measured from the optical analysis of the solar spectrum. There are three important observations to be made from this graph: The graph has (overall) a smooth trend from left to right, that is from light to heavy elements.
This indicates that abundances of elements in the solar system are the greatest for the light elements and the least for the heavy elements. It is thought that the early Universe consisted almost entirely of the element hydrogen, with a small amount of helium present too. IUPAC_PeriodicTable - Periodic_Table_Isotopes.pdf. _Periodic_Table-1May13.pdf. The Comic Book Periodic Table of the Elements. The Periodic Table of Videos - University of Nottingham. Elementos químicos ordenados por su radio atómico.