Please select all of the ground-state electron configurations that are correct. Copper Cu: [Ar]4s1 3d10 Chromium Cr: [Ar] 4s1 3d5 Cadmium, Cd: [Kr] 5s2 3d10 Ferric Fe(III): [Ar]3d5 chloride, Cl- : 1s2 2s2 2p6 3s1 3p6

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