>ComplexRational: proper template reflist

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{{infobox element
|name =technetium
|symbol =Tc
|Z =43
|number =43
|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 97Tc with an uncertainty corresponding to one [[standard deviation]] is {{val|4.21|0.16}} million years, while that for 98Tc is {{val|4.2|0.3}} million years; these measurements have overlapping [[confidence interval]]s.{{NUBASE2020|ref}} }}

|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[molybdenum]]
|right=[[ruthenium]]
|above=[[manganese|Mn]]
|below=[[rhenium|Re]]
|appearance=shiny gray metal
|image name=Technetium-sample-cropped.jpg
|electrons per shell=2, 8, 18, 13, 2
|phase=
|phase comment=
|density=98Tc: 11.359 g/cm3 99Tc: 11.475 g/cm3<ref name="Arblaster 2018" />
|density conditions=(at 20° C)
|density gplstp=
|density gpcm3nrt=
|density gpcm3mp=
|melting point K=2430
|melting point C=2157
|melting point F=3915
|boiling point K=4538
|boiling point C=4265
|boiling point F=7709
|triple point K=
|triple point kPa=
|critical point K=
|critical point MPa=
|heat fusion=33.29
|heat vaporization=585.2
|heat capacity=24.27
|vapor pressure 1=2727
|vapor pressure 10=2998
|vapor pressure 100=3324
|vapor pressure 1 k=3726
|vapor pressure 10 k=4234
|vapor pressure 100 k=4894
|vapor pressure comment=''(extrapolated)''
|crystal structure=hexagonal close packed
|crystal structure Pearson symbol=hP2
|lattice constants=''a'' = 274.12 pm ''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>
|electronegativity=1.9
|number of ionization energies=3
|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>
|ionization energy 2=1470
|ionization energy 3=2850
|atomic radius=136
|atomic radius calculated=
|covalent radius=147±7
|Van der Waals radius=205
|magnetic ordering=[[Paramagnetic]]
|electrical resistivity unit prefix=n
|electrical resistivity at 0=
|electrical resistivity at 20=200
|thermal conductivity=50.6
|thermal conductivity 2=
|thermal diffusivity=
|thermal expansion=
|thermal expansion comment={{val|8.175|e=−6}}/K (at 20 °C)<ref name="Arblaster 2018" />
|speed of sound=
|speed of sound rod at 20=16,200
|speed of sound rod at r.t.=
|magnetic susceptibility= {{val|+270.0|e=−6}}
|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>
|Young's modulus=
|Shear modulus=
|Bulk modulus=
|Poisson ratio=
|Mohs hardness=
|Vickers hardness=
|Brinell hardness=
|CAS number=7440-26-8
|predicted by=[[Dmitri Mendeleev]]
|prediction date=1871
|discovery and first isolation by=[[Emilio Segrè]] and [[Carlo Perrier]]
|discovery date=1937
|QID=Q1054
}}<noinclude>
{{Infobox element/element navigation|symbol=Tc}}
{{Template reference list|lower-alpha}}
{{Template reference list}}
{{documentation|1=Template:Infobox element/doc}}
</noinclude>

Template:Infobox technetium - Revision history

>ComplexRational: proper template reflist