Series

Definition

A series in chemistry often refers to a group of elements with similar properties, such as the Lanthanide or Actinide series. These elements typically exhibit trends in chemical behavior and physical properties.

5 Must Know Facts For Your Next Test

1. Lanthanides and Actinides are often called inner transition metals.
2. Elements in the same series have similar electron configurations, especially in their f orbitals.
3. The Lanthanide series includes elements from atomic numbers 57 through 71.
4. The Actinide series includes elements from atomic numbers 89 through 103.
5. Many actinides are radioactive and have applications in nuclear energy and medicine.

Review Questions

• What are the atomic number ranges for the Lanthanide and Actinide series?
• Why are Lanthanides and Actinides referred to as inner transition metals?
• Name two common applications of actinides.

Related terms

Periodic Table: A tabular arrangement of the chemical elements organized by increasing atomic number, electron configurations, and recurring chemical properties.

Electron Configuration: The distribution of electrons of an atom or molecule in atomic or molecular orbitals.

Transition Metals: Elements found in groups 3-12 on the periodic table that have partially filled d-orbitals.