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New elements are sometimes discovered when the nuclei of smaller elements are .
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Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.
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What type of electromagnetic radiation has a shorter wavelength than blue light
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Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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New elements are sometimes discovered when the nuclei of smaller elements are .
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