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d and f BLOCK ELEMENTS
Question #40156
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What is the electronic configuration of Promethium (Pm)?
A. [Xe] 4f4 5d1 6s2
B. [Xe] 4f5 6s2
C. [Xe] 4f6 6s2
D. [Xe] 4f3 5d2 6s2
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