Chemistry

What alkali metal is highly radioactive and decays into either astatine, radium, or radon?

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What is a vital constituent of plant and animal life, and is the key component of hemoglobin?
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What is the chemical symbol for gold?
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What is the half-life of Potassium 40 as it decays to Argon?
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Which of the following is a super acid?
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What is a chemical process by which the hair is permanently straightened?
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Nitrogen on the periodic table is noted by which symbol?
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Which of these chemicals is often used to reduce phosphates in water?
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What do scientists use to help organize the elements?
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