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A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
Printable version; In other projects ... Calcium 20 Ca 40.078: Scandium 21 Sc ... This periodic table is the prime form presented at this English wikipedia.
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3; it is usually shown at the foot of the table to save horizontal space.
English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical groupings.
Scandium is a chemical element with the symbol Sc and atomic number 21. It is a silvery-white metallic d-block element . Historically, it has been classified as a rare-earth element , [ 9 ] together with yttrium and the lanthanides .
Group (periodic table) List of chemical element name etymologies; Main-group element; Period (periodic table) Table of nuclides (segmented, narrow) Table of nuclides (segmented, wide) The Elements (song) Talk:Period (periodic table) User:Aenon94; User:Albert Poliakoff; User:C. J. T. T. Wilson; User:DorisLangBismuthLover; User:Fermiboson; User ...
FA: current Featured Picture used in the infobox: A: current infobox picture is of high quality (could become FP) B: current infobox picture is of good quality
Date/Time Thumbnail Dimensions User Comment; current: 05:52, 5 July 2021: 1,205 × 638 (16 KB): Sandbh: Reverted to version as of 13:51, 23 January 2021 (UTC) to be consistent with metalloid article as to the elements commonly recognised as metalloids
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