Everything in the world is made up of atoms. The structure of the atom is what gives an element its chemical and physical properties. Negatively charged particles that spin around the positive ...

The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

So convincing is this model that after only twelve years it is known no longer as “the atomic model of Rutherford and Bohr,” but is simply taken for granted as “the atom.” In this ...