Chemistry

Which of the following is an element?

More Questions from Chemistry
What element was known in ancient times and referred to in Genesis as "brimstone"?
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The Diels-Alder reaction is an example of which class of reactions?
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Which atomic particle is outside the nucleus?
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What is the most abundant element in the known universe?
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What name is given to water in the gaseous state?
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Which of these elements has the highest density?
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What noble gas has the lowest melting and boiling points of all the elements?
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Which of the following metals is not known to start fires in the presence of water?
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