Chemistry · Periodic Classification
Based on what primary consideration is Thorium (Th, Z=90) classified and placed within the f-block (actinides) of the periodic table, despite having a ground-state electronic configuration often written with d-electrons?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1According to its isotopic stability
- 2According to its macroscopic chemical properties only
- 3According to its physical properties only
- 4According to its position determined by its electronic configuration and periodic relationships✓
Correct answer
According to its position determined by its electronic configuration and periodic relationships
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