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<p>[QUOTE=&quot;The Goldeneye, post: 1351434, member: 35383&quot;]For many years civilizations have used copper, silver, and gold as their coinage metals. But you may not know that they are all in the same group on the periodic table of the chemical elements. There is one more element that is in the same group but it is the unstable synthetic element roentgenium.<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie6" alt=":cool:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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