(All elements have isotopes, but only a few are stable.) Uranium-235—so named because it has 235 total protons and neutrons—is the only uranium isotope suitable for making a bomb [1] (see Table 1).

When most people hear the word uranium, they think of mushroom clouds, Cold War standoffs or the glowing green rods from ...

Only a Few Grams of This Element Exist—and Scientists Have Used It to Break the Rules of the Periodic Table Doesn’t “organometallic sandwich” sound appetizing? By Darren Orf Published: Mar ...

Dec. 7, 2023 — The elements above iron on the periodic table are thought to be created in cataclysmic explosions like the merger of two neutron stars or in rare classes of supernovae. New ...

Rare earth elements have names like gadolinium and lutetium, and they’re in the part of the periodic table where things get weird. They have special electric and magnetic properties.

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 ...

They called it the shed, though it was more of a dilapidated hangar. A former anatomy theater, it housed old pinewood tables, a cast-iron stove and a blackboard—all under a high ceiling that leaked.

This table includes all 118 known elements, providing their names, symbols, and atomic numbers. Image Source: yourdictionary.com. Classification of Elements of Periodic Table ...

Between 1940 and 1974, teams of scientists working at the site now known as Lawrence Berkeley National Laboratory discovered more than a dozen new elements beyond element 92 (uranium). These ...

Their discovery of promethium filled a gap in the periodic table. Every other element in the group known as lanthanides had already been discovered and studied. Lanthanides are the 15 elements ...

The periodic table was initially constructed from naturally occurring elements based on similarities in their chemistry, and filled as far as uranium. Realizing elements with more than 92 protons ...

The elements were placed in the periodic table’s seventh row, which is above the row of lanthanides and the row of actinides. In the 1980s and 1990s, Roberto noted, scientists at the GSI Helmholtz ...