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	<title>Chemestry &#8211; Greg Laden&#039;s Blog</title>
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		<title>How Did They Make The Periodic Table?</title>
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		<dc:creator><![CDATA[Greg Laden]]></dc:creator>
		<pubDate>Tue, 30 Jan 2018 22:51:45 +0000</pubDate>
				<category><![CDATA[Physical Science and Math]]></category>
		<category><![CDATA[Chemestry]]></category>
		<category><![CDATA[Periodic Table]]></category>
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					<description><![CDATA[Good question. In short, Dmitri Mendeleev noticed that certain properties of the elements repeated, i.e., were periodic. This allowed him to create an initial framework for the elements that had rather intriguing empty spaces. In this way, he predicted as yet undiscovered elements. A periodic table. Eventually these discoveries happened. A longer version of how &#8230; <a href="https://gregladen.com/blog/2018/01/30/make-periodic-table/" class="more-link">Continue reading <span class="screen-reader-text">How Did They Make The Periodic Table?</span> <span class="meta-nav">&#8594;</span></a>]]></description>
		
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