When studying the halogens (group 17) on the periodic table, how does the number of the valence electrons change as the energy level is increased? A) The total number of valence electrons does not change, it remains 7. B) The total number of valence electrons does not change, it remains 1. C) The total number of valence electrons increases by 1 with each energy level. D) The total number of valence electrons decreases by 1 with each energy level.
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