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      <title>„Izotopii – Ce sunt și de ce sunt importanți?” by Conțiș Dalia Iulica</title>
      <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th</link>
      <description>Postați orice oriunde</description>
      <language>en-us</language>
      <pubDate>2025-03-24 20:30:56 UTC</pubDate>
      <lastBuildDate>2025-03-24 20:42:02 UTC</lastBuildDate>
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         <author>contisdaliapd</author>
         <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th/wish/3380130590</link>
         <description><![CDATA[<p>🔬 <strong>Definiția izotopilor</strong></p><p>Izotopii sunt atomi ai aceluiași element chimic, care au același număr de protoni, dar un număr diferit de neutroni.</p>]]></description>
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         <pubDate>2025-03-24 20:34:01 UTC</pubDate>
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         <author>contisdaliapd</author>
         <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th/wish/3380132692</link>
         <description><![CDATA[<p>🧪 <strong>Exemple de izotopi</strong></p><ul><li><p><strong>Hidrogen</strong>: Protiu (¹H), Deuteriu (²H), Tritiu (³H)</p></li><li><p><strong>Carbon</strong>: Carbon-12 (¹²C), Carbon-14 (¹⁴C)</p></li><li><p><strong>Uranium</strong>: Uranium-235 (²³⁵U), Uranium-238 (²³⁸U)</p></li></ul>]]></description>
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         <pubDate>2025-03-24 20:36:37 UTC</pubDate>
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         <title></title>
         <author>contisdaliapd</author>
         <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th/wish/3380134891</link>
         <description><![CDATA[<p>⚛ <strong>Utilizările izotopilor</strong></p><ul><li><p><strong>Medicină</strong>: Izotopii radioactivi (ex: Iod-131) în tratamentul cancerului.</p></li><li><p><strong>Arheologie</strong>: Datarea cu Carbon-14 pentru fosile.</p></li><li><p><strong>Energie nucleară</strong>: Uranium-235 folosit în reactoarele nucleare.</p></li></ul>]]></description>
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         <pubDate>2025-03-24 20:39:09 UTC</pubDate>
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         <title></title>
         <author>contisdaliapd</author>
         <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th/wish/3380136128</link>
         <description><![CDATA[<p>📜 <strong>Descoperirea izotopilor</strong></p><ul><li><p>primii izotopi au fost identificați de Frederick Soddy în 1913.</p></li></ul>]]></description>
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         <pubDate>2025-03-24 20:40:39 UTC</pubDate>
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         <author>contisdaliapd</author>
         <link>https://padlet.com/contisdaliapd/pi58ks81wysw78th/wish/3380137150</link>
         <description><![CDATA[<p>⚠ <strong>Izotopi stabili vs. instabili</strong></p><ul><li><p>Stabili: Nu se descompun în timp (ex: Carbon-12).</p></li><li><p>Instabili: Radioactivi, emit radiații și se transformă în alte elemente (ex: Uranium-238).</p></li></ul>]]></description>
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         <pubDate>2025-03-24 20:42:01 UTC</pubDate>
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