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Which of the listed properties is the same for the elements beryllium (be), magnesium (mg), and calcium (ca)? reactivity atomic radii number of energy levels number of valence electrons
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Find the protons, electrons and neutrons for strontium with a mass of 83
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Which electron configuration represents the electrons in an atom of sodium in the ground state at stp
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Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves
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How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.
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Which of the listed properties is the same for the elements beryllium (be), magnesium (mg), and calc...
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