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How many valence electrons are in atom of radon?
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Where are the noble gases located in the periodic table? a. in the center b. on the left side c. in the upper right corner d. on the far right side
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Which of the following is a property of nonmetals? a. nonmetals are ductile. b. nonmetals have a shiny luster. c. nonmetals have high density. d. nonmetals are nonconductors.
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If 5.00 grams of iron react in the presence of excess sulfuric acid, how many grams of iron (II) sul...
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