Editing Template:Infobox tantalum (section)

{{Infobox element
|number=73
|symbol=Ta
|name=tantalum
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[hafnium]]
|right=[[tungsten]]
|above=[[niobium|Nb]]
|below=[[dubnium|Db]]
|category=transition metal
|group=5
|period=6
|block=d
|image name=Tantalum_single_crystal_and_1cm3_cube.jpg
|appearance=gray blue
|electron configuration=&#91;[[xenon|Xe]]&#93; 4f<sup>14</sup> 5d<sup>3</sup> 6s<sup>2</sup>
|electrons per shell=2, 8, 18, 32, 11, 2
|phase=solid
|density gpcm3nrt=16.69
|density gpcm3mp=15
|melting point K=3290
|melting point C=3017
|melting point F=5463
|boiling point K=5731
|boiling point C=5458
|boiling point F=9856
|heat fusion=36.57
|heat vaporization=753
|heat capacity=25.36
|vapor pressure 1=3297
|vapor pressure 10=3597
|vapor pressure 100=3957
|vapor pressure 1 k=4395
|vapor pressure 10 k=4939
|vapor pressure 100 k=5634
|vapor pressure comment=
|crystal structure=body-centered cubic
|crystal structure ref=<ref name="crystal structure">{{Cite journal | doi = 10.1107/S0567740873004140 | title = The crystal structure of β-tantalum | year = 1973 | last1 = Moseley | first1 = P. T. | last2 = Seabrook | first2 = C. J. | journal = Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry | volume = 29 | issue = 5 | pages = 1170–1171}}</ref>
|crystal structure comment=&alpha;-Ta
|crystal structure 2=tetragonal
|crystal structure 2 ref=<ref name="crystal structure"/>
|crystal structure 2 comment=&beta;-Ta
|oxidation states='''5''', 4, 3, 2, 1, −1, −3
|oxidation states comment=(a&nbsp;mildly [[acid]]ic oxide)
|electronegativity=1.5
|number of ionization energies=2
|ionization energy 1=761
|ionization energy 2=1500
|atomic radius=146
|covalent radius=170±8
|magnetic ordering=[[paramagnetic]]
|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 }}
</ref>
|electrical resistivity unit prefix=n
|electrical resistivity at 20=131
|thermal conductivity=57.5
|thermal expansion at 25=6.3
|speed of sound rod at 20=3400
|magnetic susceptibility= +154.0·10<sup>−6</sup>
|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|quote=|via=}}</ref>
|Young's modulus=186
|Shear modulus=69
|Bulk modulus=200
|Poisson ratio=0.34
|Mohs hardness=6.5
|Vickers hardness=870–1200
|Brinell hardness=440–3430
|CAS number=7440-25-7
|isotopes=
{{Infobox element/isotopes decay | mn=177 | sym=Ta
|na=[[synthetic radioisotope|syn]] | hl=56.56&nbsp;h
|dm=[[electron capture|ε]] | de=1.166 | link1=hafnium-177 | pn=177 | ps=Hf}}
{{Infobox element/isotopes decay | mn=178 | sym=Ta
|na=syn | hl=2.36&nbsp;h
|dm=ε | de=1.910 | link1=hafnium-178 | pn=178 | ps=Hf}}
{{Infobox element/isotopes decay | mn=179 | sym=Ta
|na=syn | hl=1.82&nbsp;y
|dm=ε | de=0.110 | link1=hafnium-179 | pn=179 | ps=Hf}}
{{Infobox element/isotopes decay2 | mn=180 | sym=Ta
|na=syn | hl=8.125&nbsp;h
|dm1=ε | de1=0.854 | link1=hafnium-180 | pn1=180 | ps1=Hf
|dm2=[[beta emission|β<sup>−</sup>]] | de2=0.708 | link2=Isotopes of tungsten | pn2=180 | ps2=W}}
{{Infobox element/isotopes stable | mn=180[[Nuclear isomer|m]] | sym=Ta | na=0.012% | n=107 | firstlinks=yes}}
{{infobox element/isotopes stable | mn=181 | sym=Ta | na=99.988% | n=108 | firstlinks=no }}
{{Infobox element/isotopes decay | mn=182 | sym=Ta
|na=syn | hl=114.43&nbsp;d
|dm=β<sup>−</sup> | de=1.814 | link1=Isotopes of tungsten | pn=182 | ps=W}}
{{Infobox element/isotopes decay | mn=183 | sym=Ta
|na=syn | hl=5.1&nbsp;d
|dm=β<sup>−</sup> | de=1.070 | link1=Isotopes of tungsten | pn=183 | ps=W}}
|isotopes comment=
|discovered by=[[Anders Gustaf Ekeberg]]
|discovery date=1802
|history comment label=Recognized as a distinct [[chemical element|element]] by
|history comment=[[Heinrich Rose]] (1844)
|QID=Q1123
}}<!--

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{{Infobox element/element navigation|symbol=Ta}}
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