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d and f BLOCK ELEMENTS
Question #39769
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Question
What is the ground state electronic configuration of Europium (Eu, Z=63)?
A. [Xe] 4f⁶ 6s²
B. [Xe] 4f⁷ 6s²
C. [Xe] 4f⁸ 6s²
D. [Xe] 4f⁷ 5d¹ 6s¹
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