Question

The f-block elements are called as ______________.

Answer 1

f-block elements:

• f-block elements are also referred to as inner transition elements because of their placement in the periodic table due to their electron configurations.
• The f-block consists of elements in which the 4f and 5f orbitals are progressively filled.
• It contains two series i.e lanthanoids and actinoids.
• The properties of lanthanoids and actinoids differ from d-block elements thus they are placed separately in the periodic table.
• The electronic structure of f-block elements differs from the mainstream elements.

Hence, the f-block elements are called inner transition elements.