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d and f BLOCK ELEMENTS
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What is the ground state electronic configuration of Dubnium (Db, Z=105)?
A. [Rn] 5f¹⁴ 6d⁵
B. [Rn] 5f¹⁴ 6d² 7s³
C. [Rn] 5f¹⁴ 6d⁴ 7s¹
D. [Rn] 5f¹⁴ 6d³ 7s²
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