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.

In the past 250 years, new elements have been added to the table about once every 2 ½ years on average, said Paul Karol of Carnegie Mellon University. He chaired the committee that recognized the ...

Russian chemist Dmitry Mendeleev is credited with developing the basis for the modern periodic table in 1869. In a recent paper in the Journal of Physical Chemistry, Zahed Allahyari and Artem ...

The first version of Mendeleev’s periodic table, published in 1869, was reportedly completed in just one day. Historians have pieced together what happened during that day.

The periodic table captures a subtle pattern that runs through the chemical elements , the fundamental building blocks of everything around us: from the aluminium in bike frames to the xenon gas ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Coffee tables. Side tables. Tennis tables. Tables everywhere. I love a good table. And guess what ...

To mark the 150th anniversary of the periodic table, scientists have recorded an updated version of 'The Elements' song by musical satirist Tom Lehrer. The original — which is sung to the tune ...

But the periodic table contains still more; the heaviest so far is element 118, oganesson, a “super-heavy” element with 118 protons and a half-life of half a millisecond.