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d and f BLOCK ELEMENTS
Question #39763
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Question
What is the ground state electronic configuration of Promethium (Pm, Z=61)?
A. [Xe] 4f⁴ 6s²
B. [Xe] 4f⁵ 6s²
C. [Xe] 4f⁶ 6s²
D. [Xe] 4f⁵ 5d¹ 6s¹
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