Chemistry

Which of these is an element?

More Questions from Chemistry
Lutetium on the periodic table is noted by which symbol?
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What symbol appears on the periodic table for the element with the atomic number 106?
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In which emission is the most mass lost?
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What is the symbol used on the periodic table for the element Protactinium?
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Which of the following metals is not known to start fires in the presence of water?
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What is the symbol used on the periodic table for the element Fluorine?
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The spontaneity of a reaction is determined by which of these?
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Which three gas laws constitute the combined gas law (PV/T=pv/t)?
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