The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

The periodic table organizes elements according to similar properties — so anyone can tell the characteristics of an element simply by looking at its location on the table.

Discover who created the periodic table of elements and how it works. Learn about Dmitri Mendeleev’s contributions, its structure, and why it’s essential for science.

This lesson utilizes an adaptation of the board game Periodic: A Game of the Elements to help students better understand general periodic trends. This adaptation was created for use during one ...

The elements were placed in the periodic table’s seventh row, which is above the row of lanthanides and the row of actinides. In the 1980s and 1990s, Roberto noted, scientists at the GSI Helmholtz ...

In this periodic table of elements quiz, you have 10 minutes to name as many elements as you can, given only their symbol, atomic weight and the broad group they live in.

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri Mendeleev. It arranges all natural and synthetic elements by their atomic ...