Chemistry
What radioactive metallic element, found in all uranium ores, has an atomic number of 89?
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What is the spontaneous decay of atomic nuclei known as?
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The name for iodine comes from the Greek word "iodes", which means what color in English?
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Which of these items will float in a glass of water?
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What group of elements include lithium, sodium, potassium, rubidium, cesium, and francium?
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While acids dissolve most metals, what special mixture of acids is used to dissolve gold?
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