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setup>Monkbot: Task 18a (cosmetic) (manual): eval 1 template: del empty params (2×);

2020-12-16T01:39:45Z

Task 18a (cosmetic) (manual): eval 1 template: del empty params (2×);

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{{Infobox element
|name=potassium
|number=19
|symbol=K
|abundance=
|abundance in earth's crust=
|abundance in oceans=
|abundance in solar system=
|left=[[argon]]
|right=[[calcium]]
|above=[[sodium|Na]]
|below=[[rubidium|Rb]]
|category comment=
|group=1
|period=4
|block=s
|appearance=silvery gray
|image name=Potassium-2.jpg
|electrons per shell=2, 8, 8, 1
|phase=
|phase comment=
|density gplstp=
|density gpcm3nrt=0.89
|density gpcm3nrt 2=
|density gpcm3mp=0.828
|melting point K=336.7
|melting point C=63.5
|melting point F=146.3
|boiling point K=1032
|boiling point C=759
|boiling point F=1398
|triple point K=
|triple point kPa=
|critical point K=2223
|critical point MPa=16
|critical point ref=<ref>{{RubberBible92nd|page=4.122}}</ref>
|heat fusion=2.33
|heat fusion 2=
|heat vaporization=76.9
|heat capacity=29.6
|vapor pressure 1=
|vapor pressure 10=
|vapor pressure 100=
|vapor pressure 1 k=
|vapor pressure 10 k=
|vapor pressure 100 k=
|vapor pressure comment=
|crystal structure=body-centered cubic
|electronegativity=0.82
|number of ionization energies=4
|ionization energy 1=418.8
|ionization energy 2=3052
|ionization energy 3=4420
|atomic radius=227
|atomic radius calculated=
|covalent radius=203±12
|Van der Waals radius=275
|magnetic ordering=paramagnetic
|magnetic ordering ref=<ref>[http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf Magnetic susceptibility of the elements and inorganic compounds], in {{RubberBible86th}}</ref>
|electrical resistivity=
|electrical resistivity unit prefix=n
|electrical resistivity at 0=
|electrical resistivity at 20=72
|thermal conductivity=102.5
|thermal conductivity 2=
|thermal diffusivity=
|thermal expansion=
|thermal expansion at 25=83.3
|speed of sound=
|speed of sound rod at 20=2000
|speed of sound rod at r.t.=
|magnetic susceptibility= +20.8·10−6
|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=3.53
|Shear modulus=1.3
|Bulk modulus=3.1
|Poisson ratio=
|Mohs hardness=0.4
|Vickers hardness=
|Brinell hardness=0.363
|CAS number=7440-09-7
|isotopes=
{{Infobox element/isotopes stable | mn=39 | sym=K | na=93.258% | n=20 |firstlinks=yes}}
{{infobox element/isotopes decay3 |link=potassium-40 | mn=40 | sym=K | na=0.012% | hl=1.248×109 y |
dm1=[[beta decay|β−]] | de1=1.311 | link1=calcium-40 | pn1=40 | ps1=Ca |
dm2=[[electron capture|ε]] | de2=1.505 | link2=argon-40 | pn2=40 | ps2=Ar |
dm3=[[positron emission|β+]] | de3=1.505 | pn3=40 | ps3=Ar }}
{{Infobox element/isotopes stable | mn=41 | sym=K | na=6.730% | n=22 |firstlinks=no}}
|isotopes comment=
|discovery and first isolation by=[[Humphry Davy]]
|discovery date=1807
|QID=Q703
}}<noinclude>
{{Infobox element/element navigation|symbol=K}}
{{Template reference list}}
One of these is a [[WP:REFNAME|named reference]]. It may be cited in the containing article as
*<nowiki><ref name="CIAAW2013" /></nowiki> for the source ''Atomic weights of the elements 2013'' (from subtemplates used by {{tl|Infobox element}})
{{documentation|1=Template:Infobox element/doc}}
[[Category:Templates that generate named references]]
</noinclude>

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setup>Monkbot: Task 18a (cosmetic) (manual): eval 1 template: del empty params (2×);