What is the f block of the periodic table?
Understand the Problem
The question is asking about the f block of the periodic table, which refers to the section that includes the lanthanides and actinides. This block is characterized by the filling of f orbitals. The question is likely looking for an explanation or description of its properties, elements, and significance.
Answer
The f block includes lanthanides and actinides with electrons in f orbitals.
The f block of the periodic table contains the lanthanides and actinides, positioned in the two sets of rows below the main table. These elements have electrons filling the f orbitals.
Answer for screen readers
The f block of the periodic table contains the lanthanides and actinides, positioned in the two sets of rows below the main table. These elements have electrons filling the f orbitals.
More Information
The f block elements are called inner transition metals as they fill the f orbitals, specifically in their ante-penultimate electron shell. Despite being detached from the main table, they follow the sequential build-up of electron configurations.
Tips
A common mistake is confusing the placement of the f block with the main body of the periodic table where the lanthanides and actinides are actually more complex in electron shell filling.
Sources
- The F-Block: An introduction - Scienceline - scienceline.org
- f-Block Elements - Chemistry LibreTexts - chem.libretexts.org
- Block (periodic table) - Wikipedia - en.wikipedia.org
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