Chemistry
What symbol appears on the periodic table for Calcium which has the atomic number 20?
More Questions from Chemistry
What element was known in ancient times and referred to in Genesis as "brimstone"?
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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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Felix Hoffmann, not Bayer, first patented what remedy?
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What group of elements include lithium, sodium, potassium, rubidium, cesium, and francium?
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All of the halogens form acids when bonded to what element?
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