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Intermediate The Discovery Of Radioactivity

What radium compound was first isolated in a pure state?

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Hard The Discovery Of Radioactivity

What color were the undocumented spectral lines that helped identify radium?

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Intermediate The Discovery Of Radioactivity

In the Curies' radium mixture, barium compounds gave what flame color?

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Intermediate The Discovery Of Radioactivity

Marie Curie found pitchblende was how many times as active as uranium itself?

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Easy The Discovery Of Radioactivity

What did uranium rays cause the air around Marie Curie's samples to conduct?

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