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      <title>EVOLUCIÓN DE LA TABLA PERIÓDICA by Sergio Flores</title>
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      <description>Durante décadas existen evoluciones para llegar a la fabricación actual de la tabla periódica base a muchas teorías, experimentos e investigaciones.</description>
      <language>en-us</language>
      <pubDate>2023-02-03 03:13:58 UTC</pubDate>
      <lastBuildDate>2023-02-03 04:16:51 UTC</lastBuildDate>
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      <item>
         <title>1789</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467055641</link>
         <description><![CDATA[<div><strong>Antoine Lavoisier</strong></div><div><em>Químico</em></div><div><br>Ordena 33 elementos.</div>]]></description>
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         <pubDate>2023-02-03 03:23:48 UTC</pubDate>
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      <item>
         <title>1828</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467056550</link>
         <description><![CDATA[<div><strong>Jöns Jacob Berzelius</strong></div><div><em>Médico</em></div><div><br>Simboliza los elementos con letras.</div>]]></description>
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         <pubDate>2023-02-03 03:25:16 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467056550</guid>
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      <item>
         <title>1829</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467058195</link>
         <description><![CDATA[<div><strong>Johann Wolfgang Döbereiner</strong></div><div><em>Químico</em><br><br></div><div>&nbsp;Descubrió elemento en triadas.</div>]]></description>
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         <pubDate>2023-02-03 03:27:45 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467058195</guid>
      </item>
      <item>
         <title>1862</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467061089</link>
         <description><![CDATA[<div><strong>Alexandre-Emile Béguyer de Chancourtois</strong></div><div><em>Geólogo</em><br><br></div><div>Tornillo telúrico, esto llevó a <strong>Chancourtois</strong> a proponer que las propiedades de los elementos son las propiedades de los números.</div>]]></description>
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         <pubDate>2023-02-03 03:31:54 UTC</pubDate>
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      <item>
         <title>1865</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467063382</link>
         <description><![CDATA[<div><strong>John Alexander Reina Newlands</strong></div><div><em>Químico</em></div><div>&nbsp;<br>Ley de las octavas (por analogía con los siete intervalos de la escala musical).&nbsp;</div>]]></description>
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         <pubDate>2023-02-03 03:35:36 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467063382</guid>
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      <item>
         <title>1868</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467067929</link>
         <description><![CDATA[<div><strong>Julius Lothar Meyer</strong></div><div><em>Químico</em></div><div>&nbsp;<br>Periodicidad de las propiedades.</div>]]></description>
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         <pubDate>2023-02-03 03:42:15 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467067929</guid>
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      <item>
         <title>1869</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467069472</link>
         <description><![CDATA[<div><br><strong>Dmitri Mendeléyev</strong></div><div><em>Químico</em></div><div><br>Periocidad de los los pesos atómicos.</div>]]></description>
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         <pubDate>2023-02-03 03:44:48 UTC</pubDate>
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      <item>
         <title>1894</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467071191</link>
         <description><![CDATA[<div><strong>William Ramsay</strong></div><div><em>Químico</em></div><div><br>Descubrimiento de gases nobles.</div>]]></description>
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         <pubDate>2023-02-03 03:46:59 UTC</pubDate>
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      <item>
         <title>1913</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467072211</link>
         <description><![CDATA[<div><strong>Henry Moseley</strong></div><div><em>Físico</em></div><div><br>Ordenamiento por el número atómico.</div>]]></description>
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         <pubDate>2023-02-03 03:48:33 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467072211</guid>
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      <item>
         <title>1940</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467074028</link>
         <description><![CDATA[<div><strong>Glenn T. Seaborg</strong></div><div><em>Químico</em></div><div><br>Síntesis de transuránicos (son elementos químicos con número atómico mayor que 92, el número atómico del elemento uranio).</div>]]></description>
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         <pubDate>2023-02-03 03:50:51 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467074028</guid>
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      <item>
         <title>1990</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467076617</link>
         <description><![CDATA[<div><br>Grupos de la tabla enumerados del 1 al 18.</div>]]></description>
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         <pubDate>2023-02-03 03:54:21 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467076617</guid>
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      <item>
         <title>2019</title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467079683</link>
         <description><![CDATA[<div><br>Año internacional de la tabla periódica.</div>]]></description>
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         <pubDate>2023-02-03 03:58:12 UTC</pubDate>
         <guid>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467079683</guid>
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      <item>
         <title></title>
         <author>sergioflores0317</author>
         <link>https://padlet.com/sergioflores0317/26sk4y6x9kar4lsv/wish/2467091414</link>
         <description><![CDATA[<div><em>Biblioteca de la facultad de las ciencias quimicas </em>. (s.f.). Obtenido de https://biblioteca.ucm.es/qui/historia-de-la-tabla-periodica<br><br></div><div><em>EXPLORA</em>. (s.f.). Obtenido de https://www.explora.cl/blog/cual-es-el-origen-de-la-tabla-periodica/#:~:text=En%201869%2C%20el%20qu%C3%ADmico%20ruso,menor%20a%20mayor%20masa%20at%C3%B3mica.<br><br></div><div>&nbsp;<br><br></div>]]></description>
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         <pubDate>2023-02-03 04:14:04 UTC</pubDate>
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