An element's atomic number defines it. An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons.

In 1922, he was awarded the Nobel Prize in Physics for his work on the atom’s structure ... from Bohr's Model of an Atom? Some well-known models of atom are Dalton's atomic model, Thomson's ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as ... Rutherford's model wasn't quite ...

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 ... is the same as its proton (atomic) number.

They have demonstrated that nuclear polarisation does not impede the study of muonic atoms. It clears a major obstacle that ...

Having 'solved' the structure of ... with the polyglycine model, which had excellent stereochemistry, we could get to collagen without any problems in terms of atomic crowding.

Though this "Bohr model" of the atom is now considered relatively ... Eliot Bohr's family's connection to the atomic structure goes deeper than this, too. His grandfather is Aage Niels Bohr ...

The team's findings, published in the journal Physical Review X, advance knowledge of both the structure of the nucleus itself at the atomic level ... a computational model that captures a variety ...

To continue his research, he demanded a source of higher energy and higher intensity “atomic projectiles ... Studying the structure of the atom on smaller scales and being able to produce ...