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Which principal energy level can hold a maximum of 8 electrons?
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Which principal energy level can hold a maximum of 8 electrons?

User Catlan
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"Second (2nd) principal energy level" can hold a maximum of 8 electrons.

Maximum electrons = 2n² = 8
n² = 8/2
n = √4
n = 2

Hope this helps!
User Mohammad Saad
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