Chemistry
What is added to salt to prevent thyroid disease?
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What transition metals are the only elements known to produce a magnetic field?
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Beryllium, magnesium, calcium, strontium, barium, and radium consist what group of elements?
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What post-transition metal is used to make blue and violet light-emitting diodes (LEDs) and diode lasers?
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What is the symbol used on the periodic table for the element Fluorine?
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The noble gases that make up Group XVIII of the periodic table is also known as which of the following?
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Which element was the first ever artificially created?
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Phosphorous on the periodic table is noted by which symbol?
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What compounds that are soluble in water are classed as bases?
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