Template:Infobox selenium

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Selenium
As ←

ibox As

Script error: No such module "Su".Se  (e)
 → Br

ibox Br

File:Mergefrom.svgISOBOX reuse · temporarily taskforce (talk) · Current page: IB-live (selenium) · (edit)
| Article: Selenium  e · h | Isotopes of selenium  e · h | Template: {{Infobox selenium}}  e · h | {{Infobox selenium isotopes}}  e · h |
Useful links: cat:Task list (124) · cat:ref & cmt (0) · CAT:DUPARG · RELC Infobox · RELC Isobox
random todo (ca. 1⁄36): {{[[Template:Infobox Script error: No such module "Random".|Infobox Script error: No such module "Random".]]}}, random all (1⁄124): K: {{Infobox potassium}} · (meta: IB <element> · Isobox <element>)
(
)
| check      =
| checknote1 =
ISOBOX reuse taskforce — Helptext
What is this?
(this text box:
)
Per December 2022, a WP:ELEMENTS taskforce is working to re-use isotopes data. Isotopes present in Isobox <element> are reused in Infobox <element> (read & shown, automatically and real-time).
This task is to check whether the reused data indeed has all abandoned data.
The lefthand table is the Isobox(Se). This data is live, and is shown in both "Isotopes of selenium", and in Infobox (Se) → "Selenium". File:Green check.svgY
The righthand (middle of page) table is the old "Main isotopes of element" data from Infobox (Se), which does not show any more and will be deleted. File:Red x.svgN
Todo
  • A. Please compare & check the two tables and sources. Update the lefthand Isobox as needed.
When the situation is unclear or to be researched, leave a comment in |checknote1=.
When OK, add the following to this Infobox page (edit), inside the {{infobox ..}} template code:
{{Infobox uranium
|check     = ok
|checknote1= Not sure about xyz, someone pls take a look
  • B. Old Infobox parameters |isotopes comment=, |isobox ref= to remove.
Deprecated parameters (done)
Tracked in ref & cmt category (0), as blacklisted parameters.
1. Manually copy/paste from Infobox to Isobox:
|isotopes ref=→|isobox ref=
|isotopes comment=→|isotopes comment=
2.These parameters may then be deleted from the Infobox (and so disappear from the category).
For Z>=E119, there is new parameter |theoretical isotopes comment=.
The table rows ({{isotope .. / .. decay2|mn= ..}} &tc.) now have new |ref=, one per isotope.
File:Yes check.svg Done (Cf, F, Pb). For Z>=E119, there is new parameter |theoretical isotopes comment=.
  • C. Align the named references.
TL;DR: Named references must be checked for exact spelling (c/p). Red messages in article References section.
References can be named, defined and reused over four pages: Article, Isotopes of <element>, {{Infobox <element>}}, {{Infobox <element> isotopes}}. In the wikicode, they appear as <ref name="Hofmann2016">..</ref>, and reused as <ref name="Hofmann2016" />.
Those ref name (reused) and ref content (when redefined) must be exactly the same (true copy/paste).
Misspellings appear as red error messages in the references section of the two live articles.
Resolving: these messages are to be removed by checking and copy/pasting the <syntaxhighlight lang="text" class="" id="" style="" inline="1">ref name=</syntaxhighlight> wikicodes.
Sometimes it is easier to remove a reference (already abandoned) from the Infobox completely, after checking it is in the Isobox allright.

Examples demo: IB(U)/s · IB(119)/s · IB(121)/s

Notes
  • |checknote1=My comments is a mini-talk, free to use and expand, to communicate about this element.
|checknote2= same.
  • |check=ok will re-sort this Infobox <element> in the task category from <syntaxhighlight lang="text" class="" id="" style="" inline="1">*</syntaxhighlight> (not ok) to <syntaxhighlight lang="text" class="" id="" style="" inline="1">O</syntaxhighlight> (ok).
Text can be different: |check=todo: foobar, will read as "not ok yet".
  • Please do not remove the isotopes data from the Infobox, and do not edit the meta-templates.
OTOH, |isotopes ref=, |isotopes comment= and abandoned references may be deleted from Infobox <element> (see B, C).
  • Other data can be edited as usual.
Standard atomic weight data is not affected (to be ignored).
  • When all Infoboxes are OK and stable, this Isobox reuse task will be ended, data removed.
ISOBOX selenium File:Green check.svgY (child; reused) live
Iso­tope Decay
abun­dance half-life (t1/2) mode pro­duct
72Se syn Script error: No such module "val". ε 72As
γ –
74Se 0.86% stable
75Se syn Script error: No such module "val". ε 75As
γ –
76Se 9.23% stable
77Se 7.60% stable
78Se 23.69% stable
79Se trace Script error: No such module "val". β− 79Br
80Se 49.80% stable
82Se 8.82% Script error: No such module "val". β−β− 82Kr
IB selenium File:Red x.svgN (old data, hidden) live
 
Abun­dance Half-life (t1/2) Decay mode Pro­duct
72Se syn 8.4 d ε 72As
γ –
74Se 0.86% stable
75Se syn 119.8 d ε 75As
γ –
76Se 9.23% stable
77Se 7.60% stable
78Se 23.69% stable
79Se trace 3.27×105 y β− 79Br
80Se 49.80% stable
82Se 8.82% 1.08×1020 y β−β− 82Kr
Selenium, 34Se
File:SeBlackRed.jpg
Selenium
Pronunciation/sɪˈliːniəm/ ​(sə-LEE-nee-əm)
Appearancegrey metallic-looking, red, and vitreous black (not pictured) allotropes
Standard atomic weight Ar°(Se)
  • Script error: No such module "val".
  • Script error: No such module "val". (abridged)[1]
Selenium in the periodic table
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
S
↑
Se
↓
Te
arsenic ← selenium → bromine
Atomic number (Z)34
Block  [[Block (periodic table)#|]]
Electron configuration[Ar] 3d10 4s2 4p4
Electrons per shell2, 8, 18, 6
Physical properties
Phase at STPsolid
Melting point494 K ​(221 °C, ​430 °F)
Boiling point958 K ​(685 °C, ​1265 °F)
Density (near r.t.)gray: 4.81 g/cm3
alpha: 4.39 g/cm3
vitreous: 4.28 g/cm3
when liquid (at m.p.)3.99 g/cm3
Critical point1766 K, 27.2 MPa
Heat of fusiongray: 6.69 kJ/mol
Heat of Script error: No such module "Engvar".95.48 kJ/mol
Molar heat capacity25.363 J/(mol·K)
Script error: No such module "Engvar". pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 500 552 617 704 813 958
Atomic properties
Oxidation states−2, −1, 0,[2] +1,[3] +2, +3, +4, +5, +6 (a strongly acidic oxide)
ElectronegativityPauling scale: 2.55
Script error: No such module "Engvar". energies
  • 1st: 941.0 kJ/mol
  • 2nd: 2045 kJ/mol
  • 3rd: 2973.7 kJ/mol
Atomic radiusempirical: 120 pm
Covalent radius120±4 pm
Van der Waals radius190 pm
File:Selenium spectrum visible.png
Spectral lines of selenium
Other properties
Natural occurrenceprimordial
Crystal structure ​trigonal
Speed of sound thin rod3350 m/s (at 20 °C)
Thermal expansionamorphous: 37 µm/(m⋅K) (at 25 °C)
Thermal conductivityamorphous: 0.519 W/(m⋅K)
Magnetic orderingdiamagnetic[4]
Molar magnetic susceptibilityScript error: No such module "val". cm3/mol (298 K)[5]
Young's modulus10 GPa
Shear modulus3.7 GPa
Bulk modulus8.3 GPa
Poisson ratio0.33
Mohs hardness2.0
Brinell hardness736 MPa
CAS Number7782-49-2
History
Namingafter Selene, Greek goddess of the moon
Discovery and first isolationJöns Jakob Berzelius and Johann Gottlieb Gahn (1817)
Main isotopes of selenium
Iso­tope Decay
abun­dance half-life (t1/2) mode pro­duct
72Se syn Script error: No such module "val". ε 72As
γ –
74Se 0.86% stable
75Se syn Script error: No such module "val". ε 75As
γ –
76Se 9.23% stable
77Se 7.60% stable
78Se 23.69% stable
79Se trace Script error: No such module "val". β− 79Br
80Se 49.80% stable
82Se 8.82% Script error: No such module "val". β−β− 82Kr
Script error: No such module "Icon". Category: Selenium
| references
Selenium
As ←

ibox As

Script error: No such module "Su".Se  (e)
 → Br

ibox Br

indexes by PT (page)
  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Allotropes (demo)
Group (demo)
Period (demo)
Block (demo)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Wikidata *
Symbol etymology (11 non-trivial)
* Not used in {{Infobox element}} (2023-01-01)
See also {{Index of data sets}} · Category:data sets (0)

References

These references will appear in the article, but this list appears only on this page.
  1. ↑ "Standard Atomic Weights: Selenium". CIAAW. 2013.
  2. ↑ A Se(0) atom has been identified using DFT in [ReOSe(2-pySe)3]; see Cargnelutti, Roberta; Lang, Ernesto S.; Piquini, Paulo; Abram, Ulrich (2014). "Synthesis and structure of [ReOSe(2-Se-py)3]: A rhenium(V) complex with selenium(0) as a ligand". Inorganic Chemistry Communications. 45: 48–50. doi:10.1016/j.inoche.2014.04.003. ISSN 1387-7003.
  3. ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  4. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  5. ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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