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Encyclopedia > Periodic table series

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A chemical series is a group of chemical elements whose physical and chemical characteristics vary progressively from one end of the series to another. Chemical series were discovered before the creation of the periodic table of the chemical elements, which was created to try to organise the elements according to their chemical properties. Several chemical series correspond exactly to periodic table groups: this is not a coincidence, as the physical properties that group them arise from the same atomic orbital configurations that place them in the same group in the periodic table. The chemical series of the periodic table are the: Alkali metals (periodic table group 1) Alkaline earth metals (periodic table group 2) Lanthanides Actinides Transition metals Other metals Metalloids Nonmetals Chalcogens (periodic table group 16) Halogens (periodic table group 17) Noble gases (periodic table group 18) See also Coinage metal Noble metal Base metal Platinum group Periodic tables Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Inline F-block | Elements to 218 | Electron configurations | Metals and non metals | Table by blocks Lists of Elements Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass Group | Period | Series | Block Categories: Chemical element groups

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	Home page:The Extended Periodic Table Of The Elements (1271 words) Such a series, which would be listed in a row below the actinide series in the periodic table, should consist of 32 elements, ending in the neighbourhood of element 153 and resulting primarily from the filling of the 5g and 6f inner electron shells. The difficulty arises partly because of uncertainty of the exact point at which the energetically similar 5g and 6f orbitals begin to fill and partly because calculations indicate that the 8p and 7d orbitals may be very close in energy to the 5g and 6f orbitals. The prediction of properties on the basis of an orderly extrapolation appears to be of doubtful validity, however, in this heavy-element region of the periodic table. The Conventional Periodic Table of the Elements: (1465 words) This version presents the two series in between the columns (groups) of the main body of the table, in an apparent effort to emphasize the non-existent relationship among the different groups and the two series. From the previous examples, translated from the different sources cited for each table, one may observe the disorderly manner in which the Actinide Series and the Lanthanide Series of elements are placed upon the conventional periodic table. Due to the disorderly manner in which the two series are presented, it is impossible to visualize specific relationships among the elements on the main body of the table in relation to these two series.
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