What are d block elements?

D-block elements are elements in which the last electron enters the d-orbital of their atoms. They are also called transition elements.

These elements are placed in the middle of the periodic table, between s-block and p-block. They include groups 3 to 12. D-block elements are metals and show special properties like variable oxidation states and formation of colored compounds.

Characteristics of d-block elements

• Have partially filled d-orbitals.
• Form colored ions.
• Show variable oxidation states.
• Act as catalysts in reactions.
• High melting and boiling points.

Examples