Periodic table (detailed cells)

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Periodic table
Part of a series on the
Periodic table forms 18-column 32-column Alternative and extended forms
Periodic table history D. Mendeleev 1871 table 1869 predictions Discovery of elements Naming and etymology for people for places controversies (in East Asia) Systematic element names
Sets of elements
By periodic table structure Groups (1–18) 1 (alkali metals) 2 (alkaline earth metals) 3 4 5 6 7 8 9 10 11 12 13 14 15 (pnictogens) 16 (chalcogens) 17 (halogens) 18 (noble gases) Periods (1–7, ...) 1 2 3 4 5 6 7 8+ Blocks (s, p, d, f, ...) Atomic orbitals Aufbau principle
By metallic classification Metals alkali alkaline earth transition post-transition lanthanide actinide Metalloids dividing metals and nonmetals Nonmetals nonmetal halogen noble gas
By other characteristics Coinage metals Platinum-group metals Precious metals Refractory metals Heavy metals Light metals Native metals Noble metals Main-group elements Rare-earth elements Transuranium elements Major, minor and trans- actinides
Elements
List of chemical elements by abundance (in human body) by atomic properties by isotope stability by symbol
Properties of elements Relative atomic mass Crystal structure Electron affinity configuration Electronegativity (Allen, Pauling) Goldschmidt classification Nutrition Valence
Data pages for elements Abundance Atomic radius Boiling point Critical point Density Elasticity Electrical resistivity Electron affinity / configuration Electronegativity Hardness Heat capacity / of fusion / of vaporization Ionization energy Melting point Oxidation state Speed of sound Thermal conductivity / expansion coefficient Vapor pressure
Category Chemistry Portal
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This page shows large-cell versions of the periodic table. For each element name, symbol, atomic number, and mean atomic mass value for the natural isotopic composition of each element are shown. The periodic table of the chemical elements is a tabular method of displaying the chemical elements.

The two layout forms originate from two graphic forms of presentation of the same periodic table. Historically, when the f-block was identified it was drawn below the existing table, with markings for its in-table location (this page uses dots or asterisks). Also, a common presentation is to put all 15 lanthanide and actinide columns below, while the f-block only has 14 columns. The fifteenth (rightmost) lanthanide and actinide are d-block elements, belonging to group 3, with scandium and yttrium.

Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev invented the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.

Content
18-column layout	32-column layout
Periodic table with f-block separated

18-column layout

Template:Periodic table (18 columns, large cells)

32-column layout

Template:Periodic table (32 columns, large cells)

References

IUPAC periodic table (Retrieved 20 June 2005)
WebElements Periodic table (professional edition) (Retrieved 20 June 2005)
Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107–1122, 2003
IUPAC Standard Atomic Weights Revised (2005).
IUPAC Quantities, Units and Symbols in Physical Chemistry Third Edition

Notes

"The periodic table of the elements". International Union of Pure and Applied Chemistry. 2007-07-22. Retrieved 2008-02-08.

Periodic table

Periodic table forms

Sets of elements

By periodic table structure

Groups	1 (Hydrogen and alkali metals) 2 (Alkaline earth metals) 3 4 5 6 7 8 9 10 11 12 13 (Triels) 14 (Tetrels) 15 (Pnictogens) 16 (Chalcogens) 17 (Halogens) 18 (Noble gases)
Periods	1 2 3 4 5 6 7 8+ Aufbau Fricke Pyykkö
Blocks	Aufbau principle

By metallicity

Metals	Lanthanides Actinides Transition metals Post-transition metals
Metalloids	Lists of metalloids by source Dividing line
Nonmetals	Noble gases

Other sets

Elements

Lists	By: Abundance (in humans) Atomic properties Nuclear stability Symbol
Properties	Aqueous chemistry Crystal structure Electron configuration Electronegativity Goldschmidt classification Term symbol
Data pages	Abundance Atomic radius Boiling point Critical point Density Elasticity Electrical resistivity Electron affinity Electron configuration Electronegativity Hardness Heat capacity Heat of fusion Heat of vaporization Ionization energy Melting point Oxidation state Speed of sound Thermal conductivity Thermal expansion coefficient Vapor pressure

History