Chemistry
Which of the following elements has the heaviest atomic weight?
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Berkelium on the periodic table is noted by which symbol?
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The first element on the periodic table of elements with an atomic number of 1 is?
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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 used in manufacturing matches, fertilizers and pesticides, and in vulcanization of rubber?
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What is the second most abundant element by mass (about 18.5%) in the human body?
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What is the common name of the chemical compound H2O?
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