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	<title>Comments on: configuraçao eletronica</title>
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	<description>Exercícios para o Vestibular</description>
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		<title>By: Renan de Assis</title>
		<link>http://www.amigonerd.com/configuracao-eletronica/comment-page-1/#comment-7566</link>
		<dc:creator>Renan de Assis</dc:creator>
		<pubDate>Fri, 19 Jun 2009 21:38:14 +0000</pubDate>
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		<description>Letra A
O n&#250;mero qu&#226;ntico secund&#225;rio &#233; baseado nos subn&#237;veis dos el&#233;trons, os tr&#234;s el&#233;trons da camada externa s&#227;o 2s&#185;, 2s&#178; e 2p&#185;. Dois s&#227;o do subn&#237;vel s e um &#233; do subn&#237;vel p, ent&#227;o apenas dois s&#227;o diferentes.</description>
		<content:encoded><![CDATA[<p>Letra A<br />
O n&uacute;mero qu&acirc;ntico secund&aacute;rio &eacute; baseado nos subn&iacute;veis dos el&eacute;trons, os tr&ecirc;s el&eacute;trons da camada externa s&atilde;o 2s&sup1;, 2s&sup2; e 2p&sup1;. Dois s&atilde;o do subn&iacute;vel s e um &eacute; do subn&iacute;vel p, ent&atilde;o apenas dois s&atilde;o diferentes.</p>
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