^The thermal expansion of crystalline iodine is anisotropic: the parameters (at 20 °C) for each axis are αa = 86.5×10−6/K, αb = 126×10−6/K, αc = 12.3×10−6/K, and αaverage = αV/3 = 74.9×10−6/K.[3]
References
These references will appear in the article, but this list appears only on this page.
^ abcArblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN978-1-62708-155-9.
This template adds an automatically generated short description (chemical elements). If the automatic short description is not optimal, replace it by adding ((Short description)) at the top of the article.
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ionization energy ref
Parameters with a .. comment suffix are added to the end of a data line, with a space added. Comments are reproduced without formatting additions (no brackets, no italics, ...):
((Infobox element|name=|symbol=|number=<!-- image -->|image name=|image upright=|spectral image=<!-- central data list --><!-- General properties -->|pronounce=<!-- central data list -->|alt name=|alt names=|allotropes=|appearance=|standard atomic weight=<!-- central data list --><!-- Periodic table -->|above=|below=|left=|right=|category ref=|category comment=|category color=|group=|group ref=|group comment=|period=|period ref=|period comment=|block=|block ref=|block comment=|electron configuration=|electron configuration ref=|electron configuration comment=|electrons per shell=|electrons per shell ref=|electrons per shell comment=<!-- Physical properties -->|physical properties comment=|color=|phase=|phase ref=|phase comment=|melting point K=|melting point C=|melting point F=|melting point ref=|melting point comment=|boiling point K=|boiling point C=|boiling point F=|boiling point ref=|boiling point comment=|sublimation point K=|sublimation point C=|sublimation point F=|sublimation point ref=|sublimation point comment=|density gplstp=|density gplstp ref=|density gplstp comment=|density kgpm3stp=|density kgpm3stp ref=|density kgpm3stp comment=|density gpcm3nrt=|density gpcm3nrt ref=|density gpcm3nrt comment=|density gpcm3nrt 2=|density gpcm3nrt 2 ref=|density gpcm3nrt 2 comment=|density gpcm3nrt 3=|density gpcm3nrt 3 ref=|density gpcm3nrt 3 comment=|density gpcm3mp=|density gpcm3mp ref=|density gpcm3mp comment=|density gpcm3bp=|density gpcm3bp ref=|density gpcm3bp comment=|molar volume=|molar volume unit =|molar volume ref=|molar volume comment=|triple point K=|triple point kPa=|triple point ref=|triple point comment=|triple point K 2=|triple point kPa 2=|triple point 2 ref=|triple point 2 comment=|critical point K=|critical point MPa=|critical point ref=|critical point comment=|heat fusion=|heat fusion ref=|heat fusion comment=|heat fusion 2=|heat fusion 2 ref=|heat fusion 2 comment=|heat vaporization=|heat vaporization ref=|heat vaporization comment=|heat capacity=|heat capacity ref=|heat capacity comment=|heat capacity 2=|heat capacity 2 ref=|heat capacity 2 comment=|vapor pressure 1=|vapor pressure 10=|vapor pressure 100=|vapor pressure 1 k=|vapor pressure 10 k=|vapor pressure 100 k=|vapor pressure ref=|vapor pressure comment=|vapor pressure 1 2=|vapor pressure 10 2=|vapor pressure 100 2=|vapor pressure 1 k 2=|vapor pressure 10 k 2=|vapor pressure 100 k 2=|vapor pressure 2 ref=|vapor pressure 2 comment=<!-- Atomic properties -->|atomic properties comment=|electronegativity=|electronegativity ref=|electronegativity comment=|ionization energy 1=|ionization energy 1 ref=|ionization energy 1 comment=|ionization energy 2=|ionization energy 2 ref=|ionization energy 2 comment=|ionization energy 3=|ionization energy 3 ref=|ionization energy 3 comment=|number of ionization energies=|ionization energy ref=|ionization energy comment=|atomic radius=|atomic radius ref=|atomic radius comment=|atomic radius calculated=|atomic radius calculated ref=|atomic radius calculated comment=|covalent radius=|covalent radius ref=|covalent radius comment=|Van der Waals radius=|Van der Waals radius ref=|Van der Waals radius comment=<!-- Miscellanea -->|crystal structure=|crystal structure prefix=|crystal structure ref=|crystal structure comment=|lattice constant=|crystal structure 2=|crystal structure 2 prefix=|crystal structure 2 ref=|crystal structure 2 comment=|lattice constant 2=|speed of sound=|speed of sound ref=|speed of sound comment=|speed of sound rod at 20=|speed of sound rod at 20 ref=|speed of sound rod at 20 comment=|speed of sound rod at r.t.=|speed of sound rod at r.t. ref=|speed of sound rod at r.t. comment=|thermal expansion=|thermal expansion ref=|thermal expansion comment=|thermal expansion at 25=|thermal expansion at 25 ref=|thermal expansion at 25 comment=|thermal conductivity=|thermal conductivity ref=|thermal conductivity comment=|thermal conductivity 2=|thermal conductivity 2 ref=|thermal conductivity 2 comment=|thermal diffusivity=|thermal diffusivity ref=|thermal diffusivity comment=|electrical resistivity=|electrical resistivity unit prefix=|electrical resistivity ref=|electrical resistivity comment=|electrical resistivity at 0=|electrical resistivity at 0 ref=|electrical resistivity at 0 comment=|electrical resistivity at 20=|electrical resistivity at 20 ref=|electrical resistivity at 20 comment=|band gap=|band gap ref=|band gap comment=|Curie point K=|Curie point ref=|Curie point comment=|magnetic ordering=|magnetic ordering ref=|magnetic ordering comment=|tensile strength=|tensile strength ref=|tensile strength comment=|Young's modulus=|Young's modulus ref=|Young's modulus comment=|Shear modulus=|Shear modulus ref=|Shear modulus comment=|Bulk modulus=|Bulk modulus ref=|Bulk modulus comment=|Poisson ratio=|Poisson ratio ref=|Poisson ratio comment=|Mohs hardness=|Mohs hardness ref=|Mohs hardness comment=|Mohs hardness 2=|Mohs hardness 2 ref=|Mohs hardness 2 comment=|Vickers hardness=|Vickers hardness ref=|Vickers hardness comment=|Brinell hardness=|Brinell hardness ref=|Brinell hardness comment=|CAS number=|CAS number ref=|CAS number comment=<!-- History -->|naming=|predicted by=|prediction date ref=|prediction date=|discovered by=|discovery date ref=|discovery date=|first isolation by=|first isolation date ref=|first isolation date=|discovery and first isolation by=|named by=|named date ref=|named date=|history comment label=|history comment=<!-- Isotopes not here --><!-- other -->|engvar=|QID=))
As of 7 Jan 2023[update], the "Main isotopes of <element>" tabular list will be read directly from the Isobox: "Infobox <element> isotopes". For example, ((Infobox uranium)) will read the table live from ((Infobox uranium isotopes)).
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As of 1 Jan 2023[update], elements E119 and higher are not discovered. These are called theoretical elements. They can have article and other content pages though. Incidentally, this concerns period 8 completely. For the Infobox <element>, their redirected pages do not count (are treated as: "R page does not exist").
Possible situations regarding articles & discovery, are:
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Theoretical element
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Wikidata
