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Which of the following correctly describes an element in the least reactive group on the periodic table?
Which of the following correctly describes an element in the least reactive group on the periodic table?
18 valence electrons, 4 energy levels, non-metal
No valence electrons, 1 energy level, non-metal
8 valence electrons, 4 energy levels, 36 protons
8 valence electrons, 4 energy levels, 84 protons
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answered10 months ago