Question

Why f-block elements are also called inner transition elements? ​

Answer 1

Answer:

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Answer 2

Explanation:

The f- block elements are known as inner transition elements because they involve the filling of inner sub-shells (4f or 5f). Their electronic configuration has a f-orbital (or they have valence electrons f-orbitals). These include Lanthanide and Actinide series in the periodic table.