Second transition series

Definition

The second transition series consists of the elements from Yttrium (Y) to Cadmium (Cd) in the periodic table. These elements are characterized by their d-orbitals being filled after the 4th period.

5 Must Know Facts For Your Next Test

1. The second transition series includes Yttrium (Y), Zirconium (Zr), Niobium (Nb), Molybdenum (Mo), Technetium (Tc), Ruthenium (Ru), Rhodium (Rh), Palladium (Pd), Silver (Ag), and Cadmium (Cd).
2. Second transition series elements often exhibit multiple oxidation states, which is a common property among transition metals.
3. These elements typically form colored compounds due to d-d electronic transitions.
4. Many of these elements are used as catalysts in industrial processes, such as Molybdenum in the Haber process for ammonia synthesis.
5. The atomic radii of second transition series elements are generally smaller than those of the first transition series due to greater nuclear charge.

Related terms

First Transition Series: A set of ten metallic elements from Scandium (Sc) to Zinc (Zn) where electrons fill the 3d orbitals.

Oxidation State:

The degree of oxidation of an atom within a compound, indicating its number of lost or gained electrons.

Coordination Chemistry:

A branch of chemistry focused on coordination compounds formed between metal ions and ligands.