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Continue to ChatGround State Electron Configuration - Solved: Predict The Ground-state Electron Configuration Of ... : The electron configuration for iron is $ 1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^2 $ or $ ar3d^6 4s^2 $. - https://hipztyf.blogspot.com/2021/07/ground-state-electron-configuration.html