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What is the ground-state electron configuration of o2−?.
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What is the ground-state electron configuration of o2−?.

User Mark Delphi
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Ground-state means that the element is in its lowest energy form (not in excited state). Neutral oxygen means it has no charge, meaning no electrons are removed or added in the atom. Therefore, the electron configuration for O2- is O2-: 1s22s22p6.
User Robkuz
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