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Chemistry, 21.06.2019 15:00
Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.
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Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?
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Chemistry, 21.06.2019 21:50
H2so4(aq) + mg(s)β> mgso4(aq) +h2(g) which substance is the acid in the reaction?
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The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?
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