Ever hear of nebulium? It was the element that was discovered in 1864, and nearly busted the periodic table of elements. It didn’t fit in anywhere! And that made sense — when you consider that the ...

When the Russian chemist Dmitri Mendeleev published his periodic table of elements in 1869, there were just fifty-nine entries on it. The table grouped those elements—hydrogen, oxygen, and carbon, ...

The researchers calculated the microscopic atomic structure and properties of ultraheavy elements using the relativistic Thomas-Fermi model of the atom. Through their calculations, they found that ...

Researchers have for the first time examined in detail a compound of einsteinium (Es). Einsteinium is one of the synthetic elements--elements not found in nature. It is also the heaviest element ...

Californium is a synthetic, radioactive element not found in nature. It is an actinide: one of 15 radioactive, metallic elements found at the bottom of the periodic table. The pure metal is ...