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      <title>História da Tabela Periódica  by Nathalia Assis</title>
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      <description>Física e Química A</description>
      <language>en-us</language>
      <pubDate>2020-11-18 13:57:21 UTC</pubDate>
      <lastBuildDate>2023-05-08 04:49:17 UTC</lastBuildDate>
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      <item>
         <title>1789: Lavoisier</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936656746</link>
         <description><![CDATA[<div>O francês Antoine Lavoisier, listou 33 elementos conhecidos como metais e não metais. Nasceu, assim, uma base para a organização dos elementos químicos.<br><br></div><div><br><br></div>]]></description>
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         <pubDate>2020-11-18 14:01:14 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:05:52 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:07:14 UTC</pubDate>
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      <item>
         <title>1803: Dalton</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936693049</link>
         <description><![CDATA[<div>O inglês John Dalton afirmou que a matéria é um conjunto de átomos com as mesmas propriedades e assim caracterizou os elementos conforme o peso relativo dos seus átomos. </div>]]></description>
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         <pubDate>2020-11-18 14:07:47 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:11:57 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:12:47 UTC</pubDate>
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      <item>
         <title>1868:Meyer</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936725823</link>
         <description><![CDATA[<div>Julius Meyer percebeu que os elementos se fossem dispostos pelo seu peso atómico ficariam em intervalos periódicos agrupados assim por características em comum.</div>]]></description>
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         <pubDate>2020-11-18 14:13:30 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:16:18 UTC</pubDate>
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      <item>
         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:16:56 UTC</pubDate>
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      <item>
         <title>1869:Mendeleiev</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936750371</link>
         <description><![CDATA[<div>O russo Dimitri Mendeleiev publicou a tabela periódica, com os elementos químicos separados pela massa atómica. <strong>Mendeleev afirmava que</strong> <strong>as propriedades dos elementos são uma função periódica de suas massas atômicas.</strong></div>]]></description>
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         <pubDate>2020-11-18 14:17:45 UTC</pubDate>
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      <item>
         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:24:02 UTC</pubDate>
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      <item>
         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 14:24:17 UTC</pubDate>
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      <item>
         <title>1870: Baumhauer</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936794637</link>
         <description><![CDATA[<div>O alemão Heinrich Baumhauer, criou um esquema periódico em forma espiral em que o hidrogénio fica localizado no centro e os restantes elementos circulam a sua volta, porém a tabela ganhou a sua forma original no sentido horizontal. </div>]]></description>
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         <pubDate>2020-11-18 14:25:15 UTC</pubDate>
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      <item>
         <title>1890: Ramsay</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936809172</link>
         <description><![CDATA[<div>O escocês William Ramsay descobriu a existência de gases nobres adicionando esse novo grupo a tabela periódica de Mendeleiev. Em 1905 Werner propôs que os gases nobres ficassem a extrema direita da tabela, que permanece até hoje.</div>]]></description>
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         <pubDate>2020-11-18 14:27:40 UTC</pubDate>
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      <item>
         <title>1913: Moseley</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936829338</link>
         <description><![CDATA[<div>O britanico Henry Moseley, prevê lugares na tabela para novos elementos depois de descobertos como o tecnécio (Tc) e promécio (Pm).</div>]]></description>
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         <pubDate>2020-11-18 14:30:51 UTC</pubDate>
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      <item>
         <title>1928: Janet</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936862593</link>
         <description><![CDATA[<div>Charles Janet, baseado em configurações eletrónicas cria um layout para tabela com iniciação da leitura pela esquerda.</div>]]></description>
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         <pubDate>2020-11-18 14:36:29 UTC</pubDate>
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      <item>
         <title>1945: Seaborg</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936880934</link>
         <description><![CDATA[<div>O norte-americano Glenn Seaborg sugeriu o acréscimo de uma linha abaixo da tabela com os elementos considerados actinídeos.</div>]]></description>
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         <pubDate>2020-11-18 14:39:42 UTC</pubDate>
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      <item>
         <title>1964: Benfey</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/936915206</link>
         <description><![CDATA[<div>O alemao Otto Benfey construiu uma tabela em espiral, no seu ponto de vista, era melhor para certificar e ensinar a periodicidade dos elementos.</div>]]></description>
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         <pubDate>2020-11-18 14:45:33 UTC</pubDate>
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      <item>
         <title></title>
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         <pubDate>2020-11-18 14:49:27 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:51:26 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:54:05 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:55:44 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:58:09 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 14:59:43 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 15:02:32 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 15:04:49 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 15:06:29 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-18 15:07:03 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 15:11:38 UTC</pubDate>
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      <item>
         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-18 15:12:05 UTC</pubDate>
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      <item>
         <title>O Fracasso das classificações antigas </title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949803401</link>
         <description><![CDATA[<div><strong>Lei das Tríades: Esse método de organização foi considerado ineficaz porque era muito limitado  e só atendia alguns elementos.</strong></div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 14:49:55 UTC</pubDate>
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      <item>
         <title>Parafuso Telúrico:</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949811936</link>
         <description><![CDATA[<div>A aceitação desse método foi pequena, pois os valores das massas atómicas eram, muitas vezes, equivocados e imprecisos. </div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 14:55:36 UTC</pubDate>
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      <item>
         <title>Lei das Oitavas:</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949815930</link>
         <description><![CDATA[<div>esse método foi banido por apresentar problemas, com o valor da massa atómica. Alguns elementos estavam em lugares errados. como por exemplo: o Cloro e o flúor, não possuem características semelhantes ao Cobalto ou ao Níquel. </div>]]></description>
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         <pubDate>2020-11-22 14:58:11 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
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         <pubDate>2020-11-22 15:05:27 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-22 15:06:01 UTC</pubDate>
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         <title></title>
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         <pubDate>2020-11-22 15:06:27 UTC</pubDate>
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         <title></title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949832311</link>
         <description><![CDATA[<div>Apesar de mal sucedidos, esses modelos contribuíram para o constante aperfeiçoamento sobre a classificação dos elementos químicos</div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 15:08:38 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949832311</guid>
      </item>
      <item>
         <title>A tabela periódica atual:</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949854750</link>
         <description><![CDATA[<div>A tabela periódica atual não é uma cópia fiel da tabela de Mendeleev: é mais aperfeiçoada. Não pela aparição de elementos que ocupam os espaços vazios prometidos a eles, mas por causa de um conceito estabelecido em 1913: o número atômico.</div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 15:22:19 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949854750</guid>
      </item>
      <item>
         <title></title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949858971</link>
         <description><![CDATA[<div>Henry <strong>Moseley definiu que a verdadeira identidade de um elemento não está relacionada diretamente com a massa dele, mas com a carga nuclear do átomo que o representa.</strong> Assim, modificou levemente a tabela proposta por Mendeleev, permanecendo sua essência até hoje.</div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 15:24:38 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949858971</guid>
      </item>
      <item>
         <title></title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949864799</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/862135143/eb53cb0a4951022fe9d13d9247d1e613/small_tabela_grande.jpg" />
         <pubDate>2020-11-22 15:28:34 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949864799</guid>
      </item>
      <item>
         <title>bibliografia:</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949867467</link>
         <description><![CDATA[<div><a href="https://www.infoescola.com/quimica/historia-da-tabela-periodica/">História da Tabela Periódica - Química - InfoEscola</a><br><br><a href="https://www.manualdaquimica.com/cientistas-que-contribuiram-para-quimica/mendeleiev-criador-tabela-periodica.htm">Mendeleiev – O Criador da Tabela Periódica. Dmitri Mendeleiev (manualdaquimica.com)</a><br><br><a href="https://revistagalileu.globo.com/Ciencia/noticia/2020/03/tabela-periodica-conheca-historia-e-o-futuro-incerto-do-sistema.html">Tabela periódica: conheça a história e o futuro incerto do sistema - Revista Galileu | Ciência (globo.com)</a><br><br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 15:30:20 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949867467</guid>
      </item>
      <item>
         <title>trabalho:</title>
         <author>nathalia29339</author>
         <link>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949872513</link>
         <description><![CDATA[<div>Nathalia Pancha nº:18<br>Matilde Mendes nº17<br>Luana Santos nº14<br>turno 1 <br>Professora: Maria Carmo<br>Escola Secundária Matias Aires </div>]]></description>
         <enclosure url="" />
         <pubDate>2020-11-22 15:33:39 UTC</pubDate>
         <guid>https://padlet.com/nathalia29339/5r29d6mnu2aual9k/wish/949872513</guid>
      </item>
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