Chemistry
The noble gases that make up Group XVIII of the periodic table is also known as which of the following?
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How many electrons are in the third ring of the atom Chlorine?
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Which of the following analytical techniques gives an "ion peak"?
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What symbol appears on the periodic table for Oxygen which has the atomic number 8?
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What allotrope of oxygen helps protect the biosphere from solar ultraviolet radiation?
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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 chemical term for a peptide; two amino acids linked together?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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