Question

Which elements are called inner transition elements in the modern periodic table?

Answer 1

Part 1: Modern periodic table:

• The modern periodic table is an arrangement of all the elements known in accordance with their increasing atomic number and recurring chemical properties.
• It is a tabular display of 118 chemical elements which consists of horizontal rows called periods and vertical columns are called groups.

Part 2: Inner transition elements in the modern periodic table:

• f-block elements are called inner transition elements.
• The two series of inner transition elements i.e. 4f and 5f series are known as lanthanides and actinides respectively.
• There are a total of 14 elements in the inner transition elements