Template:Infobox technetium and Template:Infobox technetium/sandbox: Difference between pages
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{{infobox element |
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|name =technetium |
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|symbol =Tc |
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|Z =43 |
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|number =43 |
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|mass number comment=(data not decisive){{efn|name="most stable isotope"|The most stable isotope of technetium cannot be determined based on existing data due to overlapping measurement uncertainties for the half-lives of the two longest-lived isotopes. The half-life of <sup>97</sup>Tc with an uncertainty corresponding to one [[standard deviation]] is {{val|4.21|0.16}} million years, while that for <sup>98</sup>Tc is {{val|4.2|0.3}} million years; these measurements have overlapping [[confidence interval]]s.{{NUBASE2020|ref}} }} |
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|abundance= |
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|abundance in earth's crust= |
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|abundance in oceans= |
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|abundance in solar system= |
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|left=[[molybdenum]] |
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|right=[[ruthenium]] |
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|above=[[manganese|Mn]] |
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|below=[[rhenium|Re]] |
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|appearance=shiny gray metal |
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|image name=Technetium-sample-cropped.jpg |
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|electrons per shell=2, 8, 18, 13, 2 |
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|phase= |
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|phase comment= |
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|density=<sup>98</sup>Tc: 11.359 g/cm<sup>3</sup><br /><sup>99</sup>Tc: 11.475 g/cm<sup>3</sup><ref name="Arblaster 2018" /> |
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|density conditions=(at 20° C) |
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|density gplstp= |
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|density gpcm3nrt= |
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|density gpcm3mp= |
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|melting point K=2430 |
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|melting point C=2157 |
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|melting point F=3915 |
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|boiling point K=4538 |
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|boiling point C=4265 |
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|boiling point F=7709 |
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|triple point K= |
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|triple point kPa= |
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|critical point K= |
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|critical point MPa= |
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|heat fusion=33.29 |
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|heat vaporization=585.2 |
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|heat capacity=24.27 |
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|vapor pressure 1=2727 |
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|vapor pressure 10=2998 |
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|vapor pressure 100=3324 |
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|vapor pressure 1 k=3726 |
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|vapor pressure 10 k=4234 |
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|vapor pressure 100 k=4894 |
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|vapor pressure comment=''(extrapolated)'' |
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|crystal structure=hexagonal close packed |
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|crystal structure Pearson symbol=hP2 |
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|lattice constants=''a'' = 274.12 pm<br />''c'' = 439.90 pm (at 20 °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> |
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|electronegativity=1.9 |
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|number of ionization energies=3 |
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|ionization energy 1=686.9<ref>{{cite journal |last1=Mattolat |first1=C. |last2=Gottwald |first2=T. |first3=S. |last3=Raeder |first4=S. |last4=Rothe |first5=F. |last5=Schwellnus |first6=K. |last6=Wendt |first7=P. |last7=Thörle-Pospiech |first8=N. |last8=Trautmann |date=24 May 2010 |title=Determination of the first ionization potential of technetium |url= |journal=Physical Review A |volume=81 |issue= |pages=052513 |doi=10.1103/PhysRevA.81.052513}}</ref> |
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|ionization energy 2=1470 |
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|ionization energy 3=2850 |
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|atomic radius=136 |
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|atomic radius calculated= |
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|covalent radius=147±7 |
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|Van der Waals radius=205 |
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|magnetic ordering=[[Paramagnetic]] |
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|electrical resistivity unit prefix=n |
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|electrical resistivity at 0= |
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|electrical resistivity at 20=200 |
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|thermal conductivity=50.6 |
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|thermal conductivity 2= |
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|thermal diffusivity= |
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|thermal expansion=<!-- see thermal expansion comment --> |
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|thermal expansion comment={{val|8.175|e=−6}}/K (at 20 °C)<ref name="Arblaster 2018" /> |
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|speed of sound= |
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|speed of sound rod at 20=16,200 |
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|speed of sound rod at r.t.= |
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|magnetic susceptibility= {{val|+270.0|e=−6}} |
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|magnetic susceptibility ref=  (298 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> |
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|Young's modulus= |
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|Shear modulus= |
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|Bulk modulus= |
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|Poisson ratio= |
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|Mohs hardness= |
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|Vickers hardness= |
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|Brinell hardness= |
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|CAS number=7440-26-8 |
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|predicted by=[[Dmitri Mendeleev]] |
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|prediction date=1871 |
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|discovery and first isolation by=[[Emilio Segrè]] and [[Carlo Perrier]] |
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|discovery date=1937 |
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|QID=Q1054 |
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}}<!-- |
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--><noinclude> |
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{{Infobox element/element navigation|symbol=Tc}} |
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{{Template reference list|lower-alpha}} |
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{{Template reference list}} |
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{{documentation|1=Template:Infobox element/doc}} |
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</noinclude> |