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d and f BLOCK ELEMENTS
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Question
What is the ground state electronic configuration of Nickel (Ni, Z=28)?
A. [Ar] 3d¹⁰
B. [Ar] 3d⁷ 4s³
C. [Ar] 3d⁹ 4s¹
D. [Ar] 3d⁸ 4s²
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