The Układ okresowy pierwiastków (Periodic Table of Elements) is a fundamental organizational tool in chemistry that arranges chemical elements by increasing atomic number and electron configuration. This comprehensive guide explains how to read and interpret the periodic table, focusing on electronic shells and valence electrons.

• The table organizes elements based on atomic number, with each element's position revealing key information about its structure
• Elements are arranged in periods (rows) and groups (columns), reflecting their electron configurations
• The periodic table provides essential data including atomic numbers, atomic mass, and element symbols
• Understanding electronic shell structure and valence electrons is crucial for predicting chemical behavior