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 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 ...

Elements in group 1 and group 2 are metals ... See the study guide on groups in the periodic table for more information.

But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

Do you remember how many elements there are in the periodic table? Spoiler: it’s probably different than you remember if you went to school before 2010. The periodic table has 118 elements in ...