Editing Template:Infobox caesium

{{infobox element
|engvar={{{engvar|en-OED}}}
|number=55
|symbol=Cs
|name=caesium
|alt name=cesium (US, informal)
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[xenon]]
|right=[[barium]]
|above=[[rubidium|Rb]]
|below=[[francium|Fr]]
|category=alkali metal
|category comment=
|group=1
|period=6
|block=s
|appearance=pale gold
|image name=Cesium.jpg
|electron configuration=&#91;[[xenon|Xe]]&#93; 6s<sup>1</sup>
|electrons per shell=2, 8, 18, 18, 8, 1
|phase=solid
|phase comment=
|density gplstp=
|density gpcm3nrt=1.93
|density gpcm3nrt 2=
|density gpcm3mp=1.843
|melting point K=301.7
|melting point C=28.5
|melting point F=83.3
|sublimation point K=
|sublimation point C=
|sublimation point F=
|boiling point K=944
|boiling point C=671
|boiling point F=1240
|triple point K=
|triple point kPa=
|critical point K=1938
|critical point MPa=9.4
|critical point ref=<ref name=b92>{{RubberBible92nd|page=4.121}}</ref>
|heat fusion=2.09
|heat fusion 2=
|heat vaporization=63.9
|heat capacity=32.210
|vapor pressure 1=418
|vapor pressure 10=469
|vapor pressure 100=534
|vapor pressure 1 k=623
|vapor pressure 10 k=750
|vapor pressure 100 k=940
|vapor pressure comment=
|crystal structure=bodycentredcubic
|oxidation states='''+1''', −1<ref name=caeside>{{cite journal|journal = [[Angewandte Chemie|Angewandte Chemie International Edition]]|year = 1979|first = J. L.|last = Dye|title = Compounds of Alkali Metal Anions|volume = 18|issue = 8|pages = 587–598|doi = 10.1002/anie.197905871}}</ref>
|oxidation states comment=(a strongly [[base (chemistry)|basic]] oxide)
|electronegativity=0.79
|number of ionization energies=3
|ionization energy 1=375.7
|ionization energy 2=2234.3
|ionization energy 3=3400
|atomic radius=265
|atomic radius calculated=
|covalent radius=244±11
|Van der Waals radius=343
|magnetic ordering=[[paramagnetic]]
|magnetic ordering ref=<ref name=magnet>{{cite book|url=http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf|format=PDF|chapter=Magnetic susceptibility of the elements and inorganic compounds|title=Handbook of Chemistry and Physics|edition=87th|publisher=CRC press|accessdate=2010-09-26|isbn=0-8493-0487-3}}</ref>
|electrical resistivity=
|electrical resistivity unit prefix=n
|electrical resistivity at 0=
|electrical resistivity at 20=205
|thermal conductivity=35.9
|thermal conductivity 2=
|thermal diffusivity=
|thermal expansion=
|thermal expansion at 25=97
|speed of sound=
|speed of sound rod at 20=
|speed of sound rod at r.t.=
|magnetic susceptibility=
|magnetic susceptibility ref=
|tensile strength=
|Young's modulus=1.7
|Shear modulus=
|Bulk modulus=1.6
|Poisson ratio=
|Mohs hardness=0.2
|Vickers hardness=
|Brinell hardness=0.14
|CAS number=7440-46-2
|isotopes={{infobox element/isotopes stable | mn=133 | sym=Cs | na=100% | n=78 |firstlinks=yes }}
{{infobox element/isotopes decay2 | mn=134 | sym=Cs
|na=[[synthetic radioisotope|syn]] | hl=2.0648&nbsp;y
|dm1=[[electron capture|ε]] | de1=1.229 | link1=xenon-134 | pn1=134 | ps1=Xe
|dm2=[[beta emission|β<sup>−</sup>]] | de2=2.059 | link2=barium-134 | pn2=134 | ps2=Ba}}
{{infobox element/isotopes decay | mn=135 | sym=Cs
|na=[[trace radioisotope|trace]] | hl=2.3×10<sup>6</sup>&nbsp;y
|dm=β<sup>−</sup> | de=0.269 | link1=barium-135 | pn=135 | ps=Ba}}
{{infobox element/isotopes decay |link=Caesium-137 | mn=137 | sym=Cs
|na=syn | hl=30.17&nbsp;y<ref name=isotope>{{cite web|title=NIST Radionuclide Half-Life Measurements|url=http://www.nist.gov/pml/data/halflife.cfm| work=[[NIST]]|accessdate=2011-03-13}}</ref>
|dm=β<sup>−</sup> | de=1.174 |link1=barium-137 | pn=137 | ps=Ba}}
|isotopes comment=
|naming=from Latin {{lang|la|caesius}}, sky blue, for its spectral colours
|discovered by=[[Robert Bunsen]] and [[Gustav Kirchhoff]]
|discovery date=1860
|first isolation by=[[Carl Setterberg]]
|first isolation date=1882
|QID=Q1108
}}<!--

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