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 can be read across from left to the right along the rows horizontally. It can also be read up and down the vertical columns. Periodic tables sometimes look different from each ...

The Periodic Table is an amazing chemistry tool that is organized with elements in order of increasing atomic number. The properties of the element change as you move across the row, but are similar ...

The records show that Mendeleev discovered the periodic system on 17 February 1869 ... at a meeting of the Russian Chemical Society. Mendeleev’s table listed elements in rows or columns in order of ...

Researchers may have found a way to create a new superheavy element, known as "element 120," which would be so hefty that it ...

These elements, with atomic numbers of 113, 115, 117, and 118 comprise the missing parts of period 7 – the lowest row – of the periodic table. Now, IUPAC, the International Union of Pure and ...