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Based on their relative positions in the periodic table, which two elements would have the same number of valence electrons?
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Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.
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An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil
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Based on their relative positions in the periodic table, which two
elements would have the same num...
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