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Use the periodic table to identify the element indicated by each electron configuration by typing in the chemical symbol for the element.
1s^2 2s^2 2p^6:
1s^2 2s^2 2p^6 3s^2 3p^3:
1s^2 2s^2 2p^6 3s^2 3p^6 4s^1:
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8:
1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^3: