Periodic Table
Structure and organization
- Atomic Number:The table is ordered by increasing atomic number, which is the number of protons in an atom’s nucleus.
- Periods:The horizontal rows are called periods.
- Groups:The vertical columns are called groups, and elements within the same group often share similar chemical properties
Key information provided for each element
- Chemical Symbol:A one or two-letter abbreviation for the element (e.g., H for Hydrogen, Fe for Iron).
- Atomic Number:The number of protons in the nucleus.
- Average Atomic Mass:The weighted average of the element’s isotopes.
