Chemistry

Which of these is an element?

More Questions from Chemistry
What is the symbol used on the periodic table for the element Chlorine?
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What is the name of a hydrocarbon with two carbons sp^2 hybridized?
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Which of these organic molecules would you expect to observe to have the highest boiling point?
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What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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Which of those would you use to perform a metathesis reaction?
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What symbol appears on the periodic table for the element with the atomic number 70?
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Which of the following is not used in a chemistry lab?
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What allotrope of oxygen helps protect the biosphere from solar ultraviolet radiation?
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