Template:Infobox tantalum

Tantalum
Hf ← ibox Hf	Ta  () infobox () isobox ()	→ W ibox W

File:Mergefrom.svgISOBOX reuse · temporarily taskforce (talk) · Current page: IB-live (tantalum) · ()
| Article: Tantalum   · h | Isotopes of tantalum   · h | Template: {{Infobox tantalum}}   · h | {{Infobox tantalum isotopes}}   · h |

Useful links: cat:Task list (124) · cat:ref & cmt (0) · CAT:DUPARG · RELC Infobox · RELC Isobox
random todo (ca. 1⁄36): {{[[Template:Infobox |Infobox ]]}}, random all (1⁄124): Dy: {{Infobox dysprosium}} · (meta: IB <element> · Isobox <element>)

()

Periodic table (Infobox links only. More element links: Index PT)
	1	2															3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
	ibox H 1																															ibox He 2
	ibox Li 3	ibox Be 4																									ibox B 5	ibox C 6	ibox N 7	ibox O 8	ibox F 9	ibox Ne 10
	ibox Na 11	ibox Mg 12																									ibox Al 13	ibox Si 14	ibox P 15	ibox S 16	ibox Cl 17	ibox Ar 18
	ibox K 19	ibox Ca 20															ibox Sc 21	ibox Ti 22	ibox V 23	ibox Cr 24	ibox Mn 25	ibox Fe 26	ibox Co 27	ibox Ni 28	ibox Cu 29	ibox Zn 30	ibox Ga 31	ibox Ge 32	ibox As 33	ibox Se 34	ibox Br 35	ibox Kr 36
	ibox Rb 37	ibox Sr 38															ibox Y 39	ibox Zr 40	ibox Nb 41	ibox Mo 42	ibox Tc 43	ibox Ru 44	ibox Rh 45	ibox Pd 46	ibox Ag 47	ibox Cd 48	ibox In 49	ibox Sn 50	ibox Sb 51	ibox Te 52	ibox I 53	ibox Xe 54
	ibox Cs 55	ibox Ba 56	ibox La 57	ibox Ce 58	ibox Pr 59	ibox Nd 60	ibox Pm 61	ibox Sm 62	ibox Eu 63	ibox Gd 64	ibox Tb 65	ibox Dy 66	ibox Ho 67	ibox Er 68	ibox Tm 69	ibox Yb 70	ibox Lu 71	ibox Hf 72	ibox Ta 73	ibox W 74	ibox Re 75	ibox Os 76	ibox Ir 77	ibox Pt 78	ibox Au 79	ibox Hg 80	ibox Tl 81	ibox Pb 82	ibox Bi 83	ibox Po 84	ibox At 85	ibox Rn 86
	ibox Fr 87	ibox Ra 88	ibox Ac 89	ibox Th 90	ibox Pa 91	ibox U 92	ibox Np 93	ibox Pu 94	ibox Am 95	ibox Cm 96	ibox Bk 97	ibox Cf 98	ibox Es 99	ibox Fm 100	ibox Md 101	ibox No 102	ibox Lr 103	ibox Rf 104	ibox Db 105	ibox Sg 106	ibox Bh 107	ibox Hs 108	ibox Mt 109	ibox Ds 110	ibox Rg 111	ibox Cn 112	ibox Nh 113	ibox Fl 114	ibox Mc 115	ibox Lv 116	ibox Ts 117	ibox Og 118
	ibox Uue 119	ibox Ubn 120	ibox Ubu 121	ibox Ubb 122		ibox Ubq 124		ibox Ubh 126

| check      =
| checknote1 =

• check=ok File:Yes check.svgY ok
• checknote1= exact same

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(Ta). This data is live, and is shown in both "Isotopes of tantalum", and in Infobox (Ta) → "Tantalum". File:Green check.svgY The righthand (middle of page) table is the old "Main isotopes of element" data from Infobox (Ta), 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 tantalum File:Green check.svgY (child; reused) live
Iso­tope Decay abun­dance half-life (t1/2) mode pro­duct 177Ta syn β+ 177Hf 178Ta syn β+ 178Hf 179Ta syn ε 179Hf 180Ta syn ε 180Hf β− 180W 180mTa 0.012% stable 181Ta 99.988% stable 182Ta syn β− 182W 183Ta syn β− 183W

IB tantalum File:Red x.svgN (old data, hidden) live
Main isotopes of tantalum
Abun­dance Half-life (t1/2) Decay mode Pro­duct 177Ta syn 56.56 h ε 177Hf 178Ta syn 2.36 h ε 178Hf 179Ta syn 1.82 y ε 179Hf 180Ta syn 8.125 h ε 180Hf β− 180W 180mTa 0.012% stable 181Ta 99.988% stable 182Ta syn 114.43 d β− 182W 183Ta syn 5.1 d β− 183W

Tantalum, ₇₃Ta

File:Tantalum single crystal and 1cm3 cube.jpg
Tantalum
Pronunciation	/ˈtæntələm/ ​(TAN-təl-əm)
Appearance	gray blue
Standard atomic weight Ar°(Ta)
	(abridged)
Tantalum 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 Nb ↑ Ta ↓ Db hafnium ← tantalum → tungsten
Atomic number (Z)	73
Block	[[Block (periodic table)#|]]
Electron configuration	[Xe] 4f14 5d3 6s2
Electrons per shell	2, 8, 18, 32, 11, 2
Physical properties
Phase at STP	solid
Melting point	3290 K ​(3017 °C, ​5463 °F)
Boiling point	5731 K ​(5458 °C, ​9856 °F)
Density (near r.t.)	16.69 g/cm3
when liquid (at m.p.)	15 g/cm3
Heat of fusion	36.57 kJ/mol
Heat of	753 kJ/mol
Molar heat capacity	25.36 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 3297 3597 3957 4395 4939 5634
Atomic properties
Oxidation states	−3, −1, 0, +1, +2, +3, +4, +5 (a mildly acidic oxide)
Electronegativity	Pauling scale: 1.5
energies	1st: 761 kJ/mol 2nd: 1500 kJ/mol
Atomic radius	empirical: 146 pm
Covalent radius	170±8 pm
File:Tantalum spectrum visible.png Spectral lines of tantalum
Other properties
Natural occurrence	primordial
Crystal structure	​ (bcc) File:Cubic-body-centered.svg α-Ta
Crystal structure	​tetragonal File:Tetragonal.svg β-Ta
Speed of sound thin rod	3400 m/s (at 20 °C)
Thermal expansion	6.3 µm/(m⋅K) (at 25 °C)
Thermal conductivity	57.5 W/(m⋅K)
Electrical resistivity	131 nΩ⋅m (at 20 °C)
Magnetic ordering	paramagnetic
Molar magnetic susceptibility	cm3/mol (293 K)
Young's modulus	186 GPa
Shear modulus	69 GPa
Bulk modulus	200 GPa
Poisson ratio	0.34
Mohs hardness	6.5
Vickers hardness	870–1200 MPa
Brinell hardness	440–3430 MPa
CAS Number	7440-25-7
History
Discovery	Anders Gustaf Ekeberg (1802)
Recognized as a distinct element by	Heinrich Rose (1844)
Main isotopes of tantalum
Iso­tope Decay abun­dance half-life (t1/2) mode pro­duct 177Ta syn β+ 177Hf 178Ta syn β+ 178Hf 179Ta syn ε 179Hf 180Ta syn ε 180Hf β− 180W 180mTa 0.012% stable 181Ta 99.988% stable 182Ta syn β− 182W 183Ta syn β− 183W

Tantalum
Hf ← ibox Hf	Ta  () infobox () isobox ()	→ W ibox W
cat:Ta (0) cat:Ta-isotopes (0) Commons Commons Wikidata Wikidata:Q1123 Wiktionary Wiktionary
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.