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      <title>Periodičnost svojstava metala i nemetala by Jan Tišma</title>
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      <pubDate>2021-10-21 19:30:00 UTC</pubDate>
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         <title>Periodičnost svojstava metala i nemetala</title>
         <author>jantisma</author>
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         <pubDate>2021-10-21 19:35:04 UTC</pubDate>
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         <title>Metali</title>
         <author>jantisma</author>
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         <pubDate>2021-10-21 19:40:47 UTC</pubDate>
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         <title>Fizikalna svojstva metala</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834584320</link>
         <description><![CDATA[<div><strong>agregacijsko stanje </strong>- čvrste tvari osim <em>žive</em><br><strong>gustoća </strong>-&nbsp; većinom tvrdi i čvrsti, metali 1. i 2. skupine manje tvrdoće<br><strong>boja </strong>-&nbsp; većina je sive boje i srebrnkastog sjaja<br><strong>talište </strong>- <em>nisko </em>talište imaju cink olovo i kadmij, a <em>visoko </em>željezo, platina i kobalt<br><strong>električna vodljivost</strong> - dobri vodići <em>topline </em>i <em>struje</em><br>metali se mogu<strong> kovati </strong>i <strong>izvlačiti</strong> u <em>žice </em>ili <em>folije</em></div>]]></description>
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         <pubDate>2021-10-21 19:52:56 UTC</pubDate>
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         <title>Kemijska svojstva metala</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834589465</link>
         <description><![CDATA[<div><strong>oksidacija</strong> - nastajanje <em>kationa</em><br>niska energija <em>ionizacije</em><br><strong>reaktivnost - </strong>veća što lakše metal oksidira</div>]]></description>
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         <pubDate>2021-10-21 19:55:57 UTC</pubDate>
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         <title>Slitine, rude, minerali, samorodni metali</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834604996</link>
         <description><![CDATA[<div><strong>slitina</strong> - homogena smjesa dvaju ili više <a href="https://hr.wikipedia.org/wiki/Metal">metala</a><br><strong>rude </strong>- nakupine mineralnih tvari, kojima je količina određenog sastojka dostatna za njegovo ekomično iskorištavanje<br><strong>minerali </strong>- reaktivniji metali<br><strong>samorodni metali </strong>- metali koje u prirodi nalazimo u elementranom stanju</div>]]></description>
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         <pubDate>2021-10-21 20:05:19 UTC</pubDate>
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         <title>Nemetali</title>
         <author>jantisma</author>
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         <pubDate>2021-10-21 20:23:21 UTC</pubDate>
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         <title>Fizikalna svojstva nemetala</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834647764</link>
         <description><![CDATA[<div><strong>agregacijsko stanje </strong>- nalaze se u sva 3 ag. stanja<br><strong>gustoća </strong>- većina male gustoće i mekani<br><strong>boja </strong>- bez sjaja<br><strong>talište </strong>- el. koji grade molekulske kristale imaju niska tališta i vrelišta, el. koji grade atomske kristale imaju visoka tališta i vrelišta<br><strong>električna vodljivost - </strong>slaba toplinska i električna vodljivost, iznimka grafit</div>]]></description>
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         <pubDate>2021-10-21 20:31:02 UTC</pubDate>
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         <title>Kemijska svojstva nemetala</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834650972</link>
         <description><![CDATA[<div><strong>nemetali </strong>- najčešće dobri oksidansi, imaju veliki afinitet i veliku energiju ionizacije<br><br></div>]]></description>
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         <pubDate>2021-10-21 20:33:19 UTC</pubDate>
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         <title>Radijus atoma</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834665016</link>
         <description><![CDATA[<div>Predstavlja polovicu razmaka između jezgara susjednih atoma.<br>U periodi porastom protonskog broja Z se smanjuje.<br>U skupini porastom protonskog broja Z&nbsp;se povećava.</div>]]></description>
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         <pubDate>2021-10-21 20:40:40 UTC</pubDate>
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         <title>Energija ionizacije</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834669520</link>
         <description><![CDATA[<div>Najmanja količina energije potrebna da se ukloni elektron iz izoliranog atoma, iona ili molekule, ovisi o radijusu.</div>]]></description>
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         <pubDate>2021-10-21 20:43:30 UTC</pubDate>
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         <title>Afinitet za elektrone</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834674029</link>
         <description><![CDATA[<div>Težnja atoma ili iona nekog elementa u plinovitom stanju da veže na sebe elektron <em>e</em><em><sup>−</sup></em></div>]]></description>
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         <pubDate>2021-10-21 20:46:26 UTC</pubDate>
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         <title>Koeficijent elektronegativnosti</title>
         <author>jantisma</author>
         <link>https://padlet.com/jantisma/ye36wqyc2rbgrdds/wish/1834681051</link>
         <description><![CDATA[<div><strong>Elektronegativnost</strong> je sposobnost nekog atoma da privuče elektronski par koji unutar molekule dijeli s drugim atomom u kovalentnoj vezi.<br>Mjera jakosti kojom atom jednog elementa u kovalentnoj kemijskoj vezi privlači elektrone atoma drugog</div>]]></description>
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         <pubDate>2021-10-21 20:51:17 UTC</pubDate>
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