The periodic table organizes chemical elements based on atomic weight, electron configurations, and chemical properties, reflecting the evolving nature of chemistry with updates like new elements and ...

ISOTOPES. Soddy first drew attention to this and similar cases of radioactive elements that are chemically identical, and since they must occupy the same place in the Periodic Table he has ...

Ever since physicist Ernest Rutherford discovered the atomic nucleus in 1911, studying its structure and behavior has ...

When the first periodic table was formulated by Mendeleev ... In addition, because technetium isotopes have short half-lives compared with the age of red giants, this finding suggested that ...

On 17 February 1869, Russian chemist Dmitri Mendeleev jotted down the symbols for the chemical elements, putting them in order according to their atomic weights and inventing the periodic table.

Californium does not occur naturally on Earth. The process to create it is as lengthy as it is expensive, making this synthetic element far more costly ... Continue Reading → ...

Situated in the carbon column of the periodic table between silicon and tin ... an atomic nucleus — evolves for exotic radioactive isotopes. As these nuclei are produced farther from stability ...

Ever since physicist Ernest Rutherford discovered the atomic nucleus in 1911, studying its structure and behavior has ...

Nuclear power is going through a bit of a renaissance as developed countries look for sources of cheap, plentiful energy to ...

Ivan Dmochowski ponders how xenon, though initially slow to earn a spot in the periodic table, is now at the forefront of advances in science and technology. For all their nobility, elements of ...