Chemistry
Which of these is a heavy gas used in specialized electric lamps?
More Questions from Chemistry
What post-transition metal is used to make blue and violet light-emitting diodes (LEDs) and diode lasers?
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What halogen is extremely rare and is considered one of the rarest naturally occurring elements on Earth?
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What symbol appears on the periodic table for Sulfur which has the atomic number 16?
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What element is used in manufacturing cans, foils and kitchen utensils, pipes, and window frames?
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Selenium came from the Greek word "selene", which means what word in English?
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