Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. Elements are listed in order of increasing atomic number.
This is a one or two-letter abbreviation that represents an element on the periodic table. For example, "H" stands for Hydrogen and "O" stands for Oxygen.
Group (Periodic Table): A column in the periodic table that contains elements with similar properties due to having the same number of valence electrons.