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<p>[QUOTE=&quot;andyscouse, post: 1288710, member: 27100&quot;]Lead and gold are indeed &#039;heavy&#039; ... but the same <i>quantity</i> of each would weigh differently, due to the density.&nbsp; As I said originally, lead has just over half the density, so an equal volume of each would mean that the weight (mass) of the lead ingot would be just over half the weight (mass) of the gold ingot.</p><p><br /></p><p>(Note that wheareas it&#039;s generally accepted that Pu (Z=94) is not &#039;naturally-occurring&#039;, minute traces of it can be found in certain ores, as a by-product along decay paths.&nbsp; By the same token, both Fr (Z=87) and At (Z=85) are deemed &#039;naturally-occurring&#039;, but there&#039;s only ever about 1 oz of At [Astatine] occurring in the earth&#039;s crust (anywhere!!) at any one time due to its high volatility, and probably only a few oz of Francium)[/QUOTE]</p><p><br /></p>

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