Chemistry

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

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What is H20 more commonly known as?
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What symbol appears on the periodic table for Magnesium which has the atomic number 12?
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Which of the following is a compound?
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What is the third most abundant gas in the earth's atmosphere?
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While acids dissolve most metals, what special mixture of acids is used to dissolve gold?
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Which of the following carries a negative charge?
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What does the gall bladder secrete?
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What contain most of the calcium ion in the human body?
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