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HEISENBERG has discussed the hypothesis that the nucleus of an atom is composed of neutrons and protons only, the neutron being regarded as a fundamental entity and not as a combination of an electron ...

For surfers, it's not enough just to wait for the right wave: they still have to know how to catch it. As it turns out, one challenge faced by surfers also applies to protons. An experiment recently ...

How is the table organized? The Periodic Table, first compiled by Russian chemist Dmitri Mendeleyev, is organized by the number of protons in the nucleus of each element's atom, known as the atomic ...

Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...

The recent discovery of elements 113 and 115 will tell us more about the structure of the nucleus and the possible existence of the “island of stability”. The heaviest elements The periodic table of ...

A chart of superheavy elements (SHEs), plotted by atomic number (protons) vs number of neutrons. Boxes are discovered SHEs, with predicted half-lives. The circle is an island of stability. Credit: ...