Chemistry
What symbol appears on the periodic table for the element with the atomic number 66?
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Selenium came from the Greek word "selene", which means what word in English?
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Praseodymium on the periodic table is noted by which symbol?
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What kind of cell has a negative EMF and a positive Gibbs free energy?
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Which of the following is produced in alkaline scrubbing and called wet slurry?
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Which element is commonly used in catalytic converters due to its properties as a reducing agent?
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