Chapter 4: The d- and f- block elements (CBSE Class 12)

Introduction

• Four Series of d-block elements are formed by filling 3d, 4d, 5d, and 6d shells of electrons. Together these comprise the d-block elements.
• The elements constituting the f-block are those in which the 4f and 5f orbitals are progressively filled in the two long periods.

Position in the Periodic Table

Electronic Configuration of the d-Block Elements (Transition elements)

General Properties of the Transition Elements (d-Block elements)

Some Important Compounds of Transition Elements

The Inner Transition Elements (f-Block elements)

The Lanthanoids

The Actinoids

Some Applications of d- and f-Block Elements