Chemistry
What symbol appears on the periodic table for Thorium which has the atomic number 90?
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The noble gases that make up Group XVIII of the periodic table is also known as which of the following?
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Selenium came from the Greek word "selene", which means what word in English?
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What are organic compounds in which some of the bonding elements are delocalized?
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What is the name of the protein found in wheat flour?
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What element is the most ductile of the pure metals, but is less malleable than gold?
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