The column at the far right holds the noble gases, named for their general unwillingness to interact with other elements. When Dmitrii Mendeleev proposed his periodic table 150 years ago ...

In March, it will be 150 years since the Russian scientist ... Thus, in the modern periodic table, the elements are arranged according to their atomic number - not their relative atomic mass.

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 ...

The periodic table of elements, devised by Russian chemist Dmitri Mendeleev, is a two-dimensional array of the chemical elements, ordered by atomic number and arranged 18 across by orbitals.

The chemical elements are arranged from left to ... Read on to learn more about how the periodic table was made over 150 years ago and why it's used today. Dmitri Mendeleev, a Russian chemist ...

Many scientists worked on the problem of organizing the elements, but Dmitri Mendeleev published his first version of the periodic table in 1869, and is most often credited as its inventor. Since then ...

The periodic table of elements (often known simply as the periodic table) has been helping scientists with their work for a little over 150 years. The handy visual reference guide organizes known ...

At the far end of the periodic table is a realm where nothing is quite as it should be. The elements here, starting at atomic number 104 (rutherfordium), have never been found in nature.

The asteroid — named after the Greek muse of sacred hymns — is so dense that researchers theorize that it may be made up of elements not contained on the periodic table. The idea that some ...

Carolyn Krause presents the second part of the three-part series on the Oak Ridge National Laboratory's role in the discovery of elements in the periodic table. Many of them have been synthesized ...

It is 150 years old this year and is holding up well under the test of time—and science. In celebration of the table, the United Nations proclaimed 2019 as the International Year of the Periodic Table ...