It also tells us that chlorine has 18 neutrons (35 - 17) and, as the number of electrons and protons are equal in a neutral atom ... of a nucleus is the same as its proton (atomic) number.

Many atomic nuclei have a magnetic field similar to that of Earth. However, directly at the surface of a heavy nucleus such ...

Its essential feature-the nucleus-was first ... is known no longer as “the atomic model of Rutherford and Bohr,” but is simply taken for granted as “the atom.” In this development ...

He discovered the atomic nucleus and developed a model of the atom that was similar to the solar system. Like planets, electrons orbited a central, sun-like nucleus. Acceptance of this model grew ...

An international research collaboration led by the University of Surrey's Nuclear Physics Group has overturned the ...

This energy level model shows two electrons on the first energy level and six electrons on the second energy level. Since this atom has a total of eight electrons, it also has eight protons. The atom ...

It seems possible that such a shell may persist as a definite structure at moderate excitation of the nucleus, the excitation energy being shared by the nucleons not contained in the closed shell.

they kept seeing that the atomic number (number of protons in the nucleus, equivalent to the positive charge of the atom) was less than the atomic mass (average mass of the atom). For example ...

The IAEA's NUCLEUS information resource portal provides access to over 100 scientific, technical and regulatory resources, including databases, applications, publications and training material. As it ...

Manchester is the birthplace of nuclear physics and this year marks 100 years ... radiation was emitted that Rutherford hypothesised might be the nucleus of a hydrogen atom. Later painstaking research ...