Chemistry
What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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What symbol appears on the periodic table for Beryllium which has the atomic number 4?
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What is the symbol used on the periodic table for the element Fluorine?
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Selenium came from the Greek word "selene", which means what word in English?
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Gold, silver, lead, and copper exhibit the properties of which of the following crystal systems?
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In a triple bond, how many each pi and sigma bonds are there?
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Which of the following activities is an example of changing a physical property?
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Which of the following is produced in alkaline scrubbing and called wet slurry?
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