What is the ground state electronic configuration of Cobalt (Co, Z=27)? - d and f BLOCK ELEMENTS Quiz | GKFix.in

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What is the ground state electronic configuration of Cobalt (Co, Z=27)?

A. [Ar] 3d⁹
B. [Ar] 3d⁶ 4s³
C. [Ar] 3d⁸ 4s¹
D. [Ar] 3d⁷ 4s²

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