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	<id>https://the-democratika.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Template%3AInfobox_potassium</id>
	<title>Template:Infobox potassium - Revision history</title>
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	<updated>2026-04-04T17:50:22Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://the-democratika.com/wiki/index.php?title=Template:Infobox_potassium&amp;diff=3954&amp;oldid=prev</id>
		<title>&gt;MadeOfAtoms: Update density and thermal expansion</title>
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		<updated>2024-03-23T09:31:46Z</updated>

		<summary type="html">&lt;p&gt;Update density and thermal expansion&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;{{Infobox element&lt;br /&gt;
|name   =potassium&lt;br /&gt;
|symbol =K&lt;br /&gt;
|Z      =19&lt;br /&gt;
|number =19&lt;br /&gt;
|abundance=&lt;br /&gt;
|abundance in earth&amp;#039;s crust=&lt;br /&gt;
|abundance in oceans=&lt;br /&gt;
|abundance in solar system=&lt;br /&gt;
|left=[[argon]]&lt;br /&gt;
|right=[[calcium]]&lt;br /&gt;
|above=[[sodium|Na]]&lt;br /&gt;
|below=[[rubidium|Rb]]&lt;br /&gt;
|appearance=silvery white, faint bluish-purple hue when exposed to air&lt;br /&gt;
|image name=Potassium-2.jpg&lt;br /&gt;
|electrons per shell=2, 8, 8, 1&lt;br /&gt;
|phase=&lt;br /&gt;
|phase comment=&lt;br /&gt;
|density=0.8590&amp;amp;nbsp;g/cm&amp;lt;sup&amp;gt;3&amp;lt;/sup&amp;gt;&amp;amp;thinsp;&amp;lt;ref name=&amp;quot;Arblaster 2018&amp;quot; /&amp;gt;&lt;br /&gt;
|density conditions=(at&amp;amp;nbsp;20°&amp;amp;nbsp;C)&lt;br /&gt;
|density gpcm3nrt=&lt;br /&gt;
|density gpcm3nrt ref=&lt;br /&gt;
|density gpcm3nrt 2=&lt;br /&gt;
|density gpcm3mp=0.82948&lt;br /&gt;
|density gpcm3mp ref=&amp;lt;ref name=&amp;quot;aitK&amp;quot; /&amp;gt;&lt;br /&gt;
|melting point K=336.7&lt;br /&gt;
|melting point C=63.5&lt;br /&gt;
|melting point F=146.3&lt;br /&gt;
|boiling point K=1030.793&lt;br /&gt;
|boiling point C=757.643&lt;br /&gt;
|boiling point F=1395.757&lt;br /&gt;
|boiling point ref=&amp;lt;ref name=&amp;quot;aitK&amp;quot;&amp;gt;{{cite journal |last1=Aitken |first1=F. |last2=Volino |first2=F. |title=New equations of state describing both the dynamic viscosity and self-diffusion coefficient for potassium and thallium in their fluid phases |journal=Physics of Fluids |date=January 2022 |volume=34 |issue=1 |pages=017112 |doi=10.1063/5.0079944}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
|triple point K=&lt;br /&gt;
|triple point kPa=&lt;br /&gt;
|critical point K=2223&lt;br /&gt;
|critical point MPa=16&lt;br /&gt;
|critical point ref=&amp;lt;ref&amp;gt;{{RubberBible92nd|page=4.122}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
|heat fusion=2.33&lt;br /&gt;
|heat fusion 2=&lt;br /&gt;
|heat vaporization=76.9&lt;br /&gt;
|heat capacity=29.6&lt;br /&gt;
|vapor pressure 1=&lt;br /&gt;
|vapor pressure 10=&lt;br /&gt;
|vapor pressure 100=&lt;br /&gt;
|vapor pressure 1 k=&lt;br /&gt;
|vapor pressure 10 k=&lt;br /&gt;
|vapor pressure 100 k=&lt;br /&gt;
|vapor pressure comment=&lt;br /&gt;
|crystal structure=body-centered cubic&lt;br /&gt;
|crystal structure Pearson symbol=cI2&lt;br /&gt;
|lattice constant=&amp;#039;&amp;#039;a&amp;#039;&amp;#039;&amp;amp;nbsp;=&amp;amp;nbsp;532.69&amp;amp;nbsp;pm (at&amp;amp;nbsp;20&amp;amp;nbsp;°C)&amp;lt;ref name=&amp;quot;Arblaster 2018&amp;quot;&amp;gt;{{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}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
|electronegativity=0.82&lt;br /&gt;
|number of ionization energies=4&lt;br /&gt;
|ionization energy 1=418.8&lt;br /&gt;
|ionization energy 2=3052&lt;br /&gt;
|ionization energy 3=4420&lt;br /&gt;
|atomic radius=227&lt;br /&gt;
|atomic radius calculated=&lt;br /&gt;
|covalent radius=203±12&lt;br /&gt;
|Van der Waals radius=275&lt;br /&gt;
|magnetic ordering=paramagnetic&lt;br /&gt;
|magnetic ordering ref=&amp;lt;ref&amp;gt;[http://www-d0.fnal.gov/hardware/cal/lvps_info/engineering/elementmagn.pdf Magnetic susceptibility of the elements and inorganic compounds], in {{RubberBible86th}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
|electrical resistivity=&lt;br /&gt;
|electrical resistivity unit prefix=n&lt;br /&gt;
|electrical resistivity at 0=&lt;br /&gt;
|electrical resistivity at 20=72&lt;br /&gt;
|thermal conductivity=102.5&lt;br /&gt;
|thermal conductivity 2=&lt;br /&gt;
|thermal diffusivity=&lt;br /&gt;
|thermal expansion=&amp;lt;!-- see thermal expansion comment --&amp;gt;&lt;br /&gt;
|thermal expansion comment={{val|77.37|e=−6}}/K (at&amp;amp;nbsp;20&amp;amp;nbsp;°C)&amp;lt;ref name=&amp;quot;Arblaster 2018&amp;quot; /&amp;gt;&lt;br /&gt;
|thermal expansion at 25=&lt;br /&gt;
|speed of sound=&lt;br /&gt;
|speed of sound rod at 20=2000&lt;br /&gt;
|speed of sound rod at r.t.=&lt;br /&gt;
|magnetic susceptibility= {{val|+20.8|e=−6}}&lt;br /&gt;
|magnetic susceptibility ref= &amp;amp;#x20;(298&amp;amp;nbsp;K)&amp;lt;ref&amp;gt;{{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}}&amp;lt;/ref&amp;gt;&lt;br /&gt;
|Young&amp;#039;s modulus=3.53&lt;br /&gt;
|Shear modulus=1.3&lt;br /&gt;
|Bulk modulus=3.1&lt;br /&gt;
|Poisson ratio=&lt;br /&gt;
|Mohs hardness=0.4&lt;br /&gt;
|Vickers hardness=&lt;br /&gt;
|Brinell hardness=0.363&lt;br /&gt;
|CAS number=7440-09-7&lt;br /&gt;
|discovery and first isolation by=[[Humphry Davy]]&lt;br /&gt;
|discovery date=1807&lt;br /&gt;
|QID=Q703&lt;br /&gt;
}}&amp;lt;!--&lt;br /&gt;
&lt;br /&gt;
--&amp;gt;&amp;lt;noinclude&amp;gt;&lt;br /&gt;
{{Infobox element/element navigation|symbol=K}}&lt;br /&gt;
{{Template reference list}}&lt;br /&gt;
One of these is a [[WP:REFNAME|named reference]]. It may be cited in the containing article as&lt;br /&gt;
*&amp;lt;nowiki&amp;gt;&amp;lt;ref name=&amp;quot;CIAAW2013&amp;quot; /&amp;gt;&amp;lt;/nowiki&amp;gt; for the source &amp;#039;&amp;#039;Atomic weights of the elements 2013&amp;#039;&amp;#039; (from subtemplates used by {{tl|Infobox element}})&lt;br /&gt;
{{documentation|1=Template:Infobox element/doc}}&lt;br /&gt;
[[Category:Templates that generate named references]]&lt;br /&gt;
&amp;lt;/noinclude&amp;gt;&lt;/div&gt;</summary>
		<author><name>&gt;MadeOfAtoms</name></author>
	</entry>
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