So the beauty of the periodic table is that the elements that are in columns, up and down, have similar properties. But there are similarities within a group going across too.

Mendeleev’s periodic table, published in 1869, was a vertical chart that organized 63 known elements by atomic weight. This arrangement placed elements with similar properties into horizontal rows.

The periodic table is an icon. But chemists still can’t agree on how to arrange it New data about the elements and their relationships have led to debate over the 150-year-old table’s optimum ...

“I call it the bicycle-wheel periodic table,” Dr. Scerri said. Lothar Meyer, a German chemist, created a partial periodic table in 1864, and a more complete version in 1869.

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. When you purchase through links on our site, we ...

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 ...

Why has the periodic table endured for 150 years? It’s an amazing tool that can compress a huge amount of information into one format. It’s one of the first things people learn about chemistry.

In this wonderful riff on the periodic table, science communicator and PhD student Jamie Gallagher mapped out where the scientists were working when they made their discoveries. Since Lothar Meyer ...

Key Concepts The periodic table is a chart containing information about the atoms that make up all matter. An element is a substance made up of only one type of atom. The atomic number of an atom is ...

International Year of the Periodic Table: 150th Anniversary of Dimitri Mendeleev's Genius Creation Published Jan 07, 2019 at 11:21 AM EST Updated Jan 07, 2019 at 11:24 AM EST ...

The Periodic Table: Its Story and Its Significance by Eric R. Scerri, Oxford University Press, 2007, 368 pages, $35 hardback (ISBN 13 978-0-19-530573-9) ...

Last May we added two new elements, Livermorium and Flerovium, to the periodic able after being first synthesized over a decade ago. Adding new elements to the periodic table is rare, not that we ...