Your teacher gives you a sample of an unknown element which is sealed in a glass tube at room temperature. At the bottom of the tube there is a small amount, a few drops at the most, of a red-black filmy liquid, and above it is a red vapor. What is this element likely to be
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Which other elements contain the same number of outer electrons as sodium
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What type of organic molecule comprises the majority of a potato?
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Your teacher gives you a sample of an unknown element which is sealed in a glass tube at room temper...
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