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Template:Infobox tantalum - Revision history
2026-04-04T19:18:03Z
Revision history for this page on the wiki
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>MadeOfAtoms: Remove beta phase until there is better agreement on its structure and properties
2024-04-12T07:06:42Z
<p>Remove beta phase until there is better agreement on its structure and properties</p>
<p><b>New page</b></p><div>{{Infobox element<br />
|symbol =Ta<br />
|Z =73<br />
|number =73<br />
|name =tantalum<br />
|abundance=<br />
|abundance in earth's crust=<br />
|abundance in oceans=<br />
|abundance in solar system=<br />
|left=[[hafnium]]<br />
|right=[[tungsten]]<br />
|above=[[niobium|Nb]]<br />
|below=[[dubnium|Db]]<br />
|image name=Tantalum_single_crystal_and_1cm3_cube.jpg<br />
|appearance=gray blue<br />
|electrons per shell=2, 8, 18, 32, 11, 2<br />
|phase=<br />
|density=16.678&nbsp;g/cm<sup>3</sup>&thinsp;<ref name="Arblaster 2018" /><br />
|density conditions=(at&nbsp;20°&nbsp;C)<br />
|density gpcm3mp=15<br />
|melting point K=3290<br />
|melting point C=3017<br />
|melting point F=5463<br />
|boiling point K=5731<br />
|boiling point C=5458<br />
|boiling point F=9856<br />
|heat fusion=36.57<br />
|heat vaporization=753<br />
|heat capacity=25.36<br />
|vapor pressure 1=3297<br />
|vapor pressure 10=3597<br />
|vapor pressure 100=3957<br />
|vapor pressure 1 k=4395<br />
|vapor pressure 10 k=4939<br />
|vapor pressure 100 k=5634<br />
|vapor pressure comment=<br />
|crystal structure=body-centered cubic<br />
|crystal structure Pearson symbol=cI2<br />
|lattice constant=''a''&nbsp;=&nbsp;330.29&nbsp;pm (at&nbsp;20&nbsp;°C)<ref name="Arblaster 2018">{{cite book |last=Arblaster |first= John W. |title=Selected Values of the Crystallographic Properties of Elements |publisher=ASM International |publication-place=Materials Park, Ohio |date=2018 |isbn=978-1-62708-155-9}}</ref><br />
|crystal structure ref=<ref name="Arblaster 2018" /><br />
|crystal structure 2=<br />
|crystal structure 2 ref=<br />
|crystal structure 2 comment=<br />
|electronegativity=1.5<br />
|number of ionization energies=2<br />
|ionization energy 1=761<br />
|ionization energy 2=1500<br />
|atomic radius=146<br />
|covalent radius=170±8<br />
|magnetic ordering=[[paramagnetic]]<br />
|magnetic ordering ref=<ref name=magnet>{{cite book |url=https://web.archive.org/web/20110303222309/http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf|chapter=Magnetic susceptibility of the elements and inorganic compounds| editor = Lide, D. R. | title = CRC Handbook of Chemistry and Physics | edition = 86th | location = Boca Raton (FL) | publisher = CRC Press | year = 2005 | isbn = 0-8493-0486-5 }}<br />
</ref><br />
|electrical resistivity unit prefix=n<br />
|electrical resistivity at 20=131<br />
|thermal conductivity=57.5<br />
|thermal expansion at 25=6.3<br />
|speed of sound rod at 20=3400<br />
|magnetic susceptibility= {{val|+154.0|e=−6}}<br />
|magnetic susceptibility ref= &#x20;(293&nbsp;K)<ref>{{Cite book|title=CRC, Handbook of Chemistry and Physics|last=Weast|first=Robert|publisher=Chemical Rubber Company Publishing|year=1984|isbn=0-8493-0464-4|location=Boca Raton, Florida|pages=E110}}</ref><br />
|Young's modulus=186<br />
|Shear modulus=69<br />
|Bulk modulus=200<br />
|Poisson ratio=0.34<br />
|Mohs hardness=6.5<br />
|Vickers hardness=870–1200<br />
|Brinell hardness=440–3430<br />
|CAS number=7440-25-7<br />
|discovered by=[[Anders Gustaf Ekeberg]]<br />
|discovery date=1802<br />
|history comment label=Recognized as a distinct [[chemical element|element]] by<br />
|history comment=[[Heinrich Rose]] (1844)<br />
|QID=Q1123<br />
}}<!--<br />
<br />
--><noinclude><br />
{{Infobox element/element navigation|symbol=Ta}}<br />
{{template reference list}}<br />
{{documentation|1=Template:Infobox element/doc}}<br />
</noinclude></div>
>MadeOfAtoms