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 ...

A century and a half ago, a Russian chemistry professor published a classification of all the known elements, organized by atomic weight. Today, the system that he created for his students — plus some ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On Feb. 17, 1869, Russian chemist Dmitri Mendeleev published his first attempt to sort the ...

The periodic table of the elements, principally created by the Russian chemist, Dmitry Mendeleev (1834-1907), celebrated its 150th anniversary last year. It would be hard to overstate its importance ...

In a significant breakthrough for the scientific community, a new element has been confirmed on the periodic table. This discovery holds potential implications for a wide range of scientific fields, ...

As of 2019, the Periodic Table of the Elements has been around for 150 years. Maybe you've felt a certain chemistry with 2019 but don't know why? Maybe it's because this year marks the 150th ...

Long before there was a periodic table of the elements, there was no need for a table — just four chairs. From ancient through medieval into early modern times, natural philosophers could count the ...