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If a neutral atom of chlorine has 17 electrons and 18 neutrons, how many electrons are in the first energy shell of this atom?
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If a neutral atom of chlorine has 17 electrons and 18 neutrons, how many electrons are in the first energy shell of this atom?

User Dominic Goulet
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2, because the first energy shell can only hold up to two atoms, and chlorine has more than 2 electons
User LucyTurtle
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