n Pour réduire le risque d’incendie ou d’explosion, utiliser un liquide ayant un point d’ignition supérieur à 60 °C (140 °F). Since 2009, IUPAC provides the standard atomic-weight values for these elements using the interval notation. Un article de Wikipédia, l'encyclopédie libre.Laboratoire national de Lawrence Livermore,Histoire de la découverte des éléments chimiques,Liste des éléments chimiques par température de fusion,Liste des degrés d'oxydation des éléments,liste d'éléments chimiques mal identifiés,https://fr.wikipedia.org/w/index.php?title=Liste_des_éléments_chimiques&oldid=174749181,Article contenant un appel à traduction en anglais,licence Creative Commons attribution, partage dans les mêmes conditions,comment citer les auteurs et mentionner la licence,Oganessian, Flerov Laboratory of Nuclear Reactions (FLNR).La dernière modification de cette page a été faite le 15 septembre 2020 à 19:47.

When discovered,Also called "radium emanation", the name was originally given by,Hy from the Greek hydrargyrum for "liquid silver". ",Chemical elements in East Asian languages,Learn how and when to remove this template message,List of chemical elements naming controversies,IUPAC Provisional Recommendations: IR-3: Elements and Groups of Elements,"Periodic Table – Royal Society of Chemistry","History of the Origin of the Chemical Elements and Their Discoverers",History of IUPAC Atomic Weight Values (1883 to 1997),Committee on Nomenclature, Terminology, and Symbols,https://en.wikipedia.org/w/index.php?title=Chemical_symbol&oldid=979660921,Articles needing additional references from May 2018,All articles needing additional references,Creative Commons Attribution-ShareAlike License,English word (the symbol Fe is derived from Latin,English word (The symbol derives from Latin,A used for Argon until 1957. Cliquez sur n'importe quel nom d'élément chimique pour connâitre ses propriétés chimique, son effet sur la santé ou son impact sur l'environnement. Cette liste contient les 118 éléments. Si un symbole chimique est imprimé sous le symbole figurant ci-dessus, ce symbole chimique signifie [...] que la batterie ou l'accumulateur contient un métal lourd sous une certaine concentration. However, four such elements, bismuth, thorium, protactinium, and uranium, have characteristic terrestrial isotopic compositions, and thus their standard atomic weights are given.Name changed due to a standardization of, modernization of, or update to older formerly-used symbol.Name designated by discredited/disputed claimant.Name proposed prior to discovery/creation of element or prior to official re-naming of a placeholder name.Berzelius, Jöns Jakob. Trump calls for 'direct payments' to 'all Americans' COVID-19 'long haulers' endure months of misery.

Many of these symbols were designated during the early years of.The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.The value listed is the conventional atomic-weight value suitable for trade and commerce. Numéro atomique Nom Symbole chimique Masse atomique Masse volumique à 20 °C Point de fusion [1] Point d'ébullition [1] Date de découverte Découvreur(s) 1: Hydrogène: H: 1,007 94 g/mol 0,084 g/l −259,1 °C −252,9 °C 1766 Earlier symbols for chemical elements stem from classical,In addition to the letters for the element itself, additional details may be added to the symbol as.Attached subscripts or superscripts specifying a nuclide or molecule have the following meanings and positions:A list of current, dated, as well as proposed and historical signs and symbols is included here with its,The following is a list of symbols and names formerly used or suggested for elements, including symbols for,The following is a list of pictographic symbols employed to symbolize elements known since ancient times (for example to the,The symbols for isotopes of elements other than hydrogen and radon are no longer in use within the scientific community.