Chemistry

How many elements in the actinide series are not radioactive?

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What kind of cell has a negative EMF and a positive Gibbs free energy?
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The Statue of Liberty is made of an iron frame with a sheet of what other metal hung over it?
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The Diels-Alder reaction is an example of which class of reactions?
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What is the chemical symbol for Sodium?
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What element was known in ancient times and referred to in Genesis as "brimstone"?
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Which of the following is not a common brominating agent?
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What state of matter takes a shape of its own?
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Which of these items will float in a glass of water?
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