The underlying reason for these trends is electron configurations of atoms. The first periodic table to become generally accepted was that of the Russian chemist Dmitri Mendeleev in 1869: he ...

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 ...

Clocks are the bedrock of modern physics and technology, as they allow scientists to assess fundamental scientific theories, ...

The Standard Model is a kind of periodic table of the elements for particle physics ... Physicist J.J. Thomson discovered the electron in 1897, and scientists at the Large Hadron Collider found the ...

Want to learn more about this centerpiece of chemistry? Take your pick from this collection of links about elements and the periodic table! Build an element ball, solve periodic puzzles, and check out ...

New discoveries continuously refine our perspective, with many breakthroughs reported regularly. Whether revolutionary or ...

The ions formed have a full outer electron shell, so are very stable. See the study guide on groups in the periodic table for more information.

We sell different types of products and services to both investment professionals and individual investors. These products and services are usually sold through license agreements or subscriptions ...

We sell different types of products and services to both investment professionals and individual investors. These products and services are usually sold through license agreements or subscriptions ...

Can France claim the first periodic table? Probably not, but a French Geology Professor ... The idea behind the explanation is that when an electron falls from a higher energy level to a lower one, ...