THE beautiful conception which inspires and co-ordinates practically the whole of modern atomic physics is the atomic model of Rutherford and Bohr. Its essential feature-the nucleus-was first put ...

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, chlorine also has 17 electrons. The relative mass of a nucleus is ...

In 1922, he was awarded the Nobel Prize in Physics for his work on the atom’s structure. Let’s find out more about his work on Bohr's Model of an Atom. What is Bohr's Model of an Atom?

Everyone at that time imagined the atom as a "plum pudding ... He realized that Rutherford's model wasn't quite right. By all rules of classical physics, it should be very unstable.