The periodic table, also called the periodic table of elements, is an organized arrangement of the 118 known chemical elements. The chemical elements are arranged from left to right and top to bottom ...

This year is the International Year of the Periodic Table of Chemical Elements—and today (March 6), the modern version celebrates its 150 th birthday. To find out more about the table and how new ...

The Quick Periodic Table of the Elements app gives users a slightly different take on the periodic table. Instead of just presenting a single version that’s color-coded the traditional way (by ...