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The Federal Department of Foreign Affairs (FDFA, German: Eidgenössisches Departement für auswärtige Angelegenheiten, French: Département fédéral des affaires étrangères, Italian: Dipartimento federale degli affari esteri, Romansh: Departament federal d’affars exteriurs ⓘ), so named since 1979, is one of the seven Departments of the Swiss government federal administration of ...
Structures, Names and Identifiers, Chemical and Physical Properties, Spectral Information, Related Records, Chemical Vendors, Pharmacology and Biochemistry, Use and Manufacturing, Safety and Hazards, Toxicity, Literature, Patents, Biomolecular Interactions and Pathways, Biological Test Results
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
MaterialsProject Database (contents: crystal structures of inorganic compounds, access: free, size: large) Materials Platform for Data Science (MPDS) or PAULING FILE (contents: critically evaluated crystal structures, as well as physical properties and phase diagrams, from the world scientific literature, access: partially free, size: very ...
A periodic table having the appearance of a multi-layered cake. There are eight wooden layers that sit on top of one another and can be rotated. Layers are divided into chemical elements with the engraved element name and atomic number. [92] Spatial tables pass through three or more dimensions (helical tables are instead classed as continuous ...
d Group 18, the noble gases, were not discovered at the time of Mendeleev's original table. Later (1902), Mendeleev accepted the evidence for their existence, and they could be placed in a new "group 0", consistently and without breaking the periodic table principle. r Group name as recommended by IUPAC.
In the same way, meaningful labeling of the many items on a technical information sheet enables far better integration with databases, search systems, online catalogs, and so on. Structured documents generally support at least hierarchical structures, for example lists, not merely list items; sections, not merely section headings; and so on.
Name Nationality Term of office Nick Witney [9] United Kingdom: 2004-2007 Alexander Weis Germany: 2007-October 2010 Vacant: October 2010-January 2011 Claude-France Arnould France: January 2011-February 2015 Jorge Domecq [7] Spain: February 2015 – January 2020 Jiří Šedivý [10] Czech Republic: April 2020 – Present