Students learn to describe the pattern in atomic number, atomic mass and atomic radius. Trends on the Periodic Table: Students learn to describe the pattern in atomic number, atomic mass, atomic ...

Discover who created the periodic table of elements and how it works. Learn about Dmitri Mendeleev’s contributions, its structure, and why it’s essential for science.

Sato, Nagame, and colleagues found that lawrencium’s first ionization energy is 4.96 eV, similar to those for group 1 of the periodic table.

Researchers at the Japan Atomic Energy Agency (JAEA) in Tokai created lawrencium by firing boron atoms at a target made of californium — itself an artificial isotope. That produced one atom of ...