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d and f BLOCK ELEMENTS
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What is the ground state electronic configuration of Manganese (Mn, Z=25)?
A. [Ar] 3d⁷
B. [Ar] 3d⁴ 4s³
C. [Ar] 3d⁶ 4s¹
D. [Ar] 3d⁵ 4s²
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