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<p>[QUOTE=&quot;rohumpy, post: 449268, member: 12134&quot;]The presence or absence of the density on the Periodic Table depends on which Periodic Table you use.&nbsp; The Large ones I used when I taught chemistry had a wealth of information on them.&nbsp; Obviously, a small one in a book can&#039;t have all the data that a large one has.[/QUOTE]</p><p><br /></p>

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