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d and f BLOCK ELEMENTS
Question #40121
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What is a key difference in the electronic configurations of Lanthanoids and Actinoids?
A. Lanthanoids fill the 5f orbitals, while actinoids fill the 4f orbitals.
B. Lanthanoids primarily fill the 4f orbitals, while actinoids primarily fill the 5f orbitals.
C. Lanthanoids fill the 4d orbitals, while actinoids fill the 5d orbitals.
D. They have identical electronic configurations.
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