Chemistry
What alkali metal is highly radioactive and decays into either astatine, radium, or radon?
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What type of fuel do semi-trailer trucks generally use?
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What gas in excited state is responsible for the bright red and yellow-green colors of the aurora?
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Which of the following is the list of hydrogen halides of group 7A from highest boiling point to lowest?
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Which one of the following countries' names is derived from the element silver?
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What is the symbol used on the periodic table for the element Chlorine?
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Unnilseptium on the periodic table is noted by which symbol?
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