Chemistry
What halogen is extremely rare and is considered one of the rarest naturally occurring elements on Earth?
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Neptunium on the periodic table is noted by which symbol?
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What symbol appears on the periodic table for the element with the atomic number 66?
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What are organic compounds in which some of the bonding elements are delocalized?
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What noble gas has the lowest melting and boiling points of all the elements?
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What is the primary hormone that has a role in stress adaptation?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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What symbol appears on the periodic table for Sulfur which has the atomic number 16?
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