Periods and Groups
Introduction to the Periodic Table: Overview and Historical Context
The periodic table is a monumental achievement in the field of chemistry, serving as an invaluable resource for understanding the relationships between elements. It has evolved over the centuries, shaped by the contributions of various scientists who sought to classify the elements in a systematic way. The journey towards the modern periodic table began in the early 19th century, notably with the work of John Dalton, who introduced the concept of atomic theory.