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How many electrons are needed to completely fill the second level energy? The third? The fourth?
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How many electrons are needed to completely fill the second level energy? The third? The fourth?

User Sam Samson
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The maximum number of electrons that an energy level can hold is determined from the formula 2n^2 equals the total number, where n is the energy level. The first energy level holds 2*1^2=2 electrons while the second holds 2*2^2= 8 electrons.
User Becky
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