Is Uranium the heaviest element? How heavy is it?
by 
Emma is sick of ignorant bullies
ANSWERS: 4
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It's the heaviest natural element, i.e., found in rock ores. Heavier elements can be created in nuclear reactors or high energy physics labs, most of which have a short half-life. "At 20 °C, the density of uranium is 18.9 g/cm3." Source: http://hypertextbook.com/facts/2006/MichaelMirochnik.shtml
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The heaviest element that is named is Meitnerium... http://www.chemicalelements.com/elements/mt.html weighing in at 266 for molecular weight. There are more elements that weight greater than that but they have no names at this stage. Uranium weighs in at 238, with the isotope 235 being one of interest in terms of nuclear issues.
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Ununoctium is the heaviest element with an isotope having an atomic weight of 294.
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It's totally heavy man. *said an ignorant bully* :)
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