Tabla periódica

The periodic table is structured so that the atomic number of elements increases by one across each row. Elements in the same column share similar properties. Although the table's layout has evolved over time, its fundamental design has remained consistent since Dmitry Mendeleev's creation in 1869.

What happens to the atomic number of elements as you move along the rows of the periodic table?

What is the significance of elements being in the same column or group in the periodic table?

How has the distribution of the periodic table changed over the years?

What has remained unchanged in the periodic table since its creation?

Who created the periodic table and in what year?