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d and f BLOCK ELEMENTS
Question #40159
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What is the electronic configuration of Thorium (Th)?
A. [Rn] 5f2 7s2
B. [Rn] 5f1 6d1 7s2
C. [Rn] 5f0 6d2 7s2
D. [Rn] 6d3 7s2
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