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Verified answer
Konf. X²⁺ : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁴konf. X : 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹
unsur X berada pada periode 4 golongan VI B
Verified answer
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s¹ periode 4 golongan VI B