Chemistry
Which of the following elements has the heaviest atomic weight?
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What symbol appears on the periodic table for Thorium which has the atomic number 90?
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While acids dissolve most metals, what special mixture of acids is used to dissolve gold?
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Which of these is the primary component of natural gas?
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What symbol appears on the periodic table for Sulfur which has the atomic number 16?
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What are organic compounds in which some of the bonding elements are delocalized?
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