Question

What period are Lanthanides?

Answer 1

Period of Lanthanides:

• A period is a name given to a horizontal row of the periodic table.
• The Lanthanide or lanthanoid series contains elements Lanthanum $\mathrm{La}$ $\left(57\right)$ through Lutetium $\mathrm{Lu}$$\left(71\right)$on the periodic table.
• They are f-block elements.
• In the periodic table, these elements are placed in the sixth row.
• Hence, Lanthanides are present in the sixth period.