The Bohr model: Journey to find structure of atoms. British physicist Joseph John Thomson made the first major breakthrough in the understanding of atoms in 1897 when he discovered that atoms ...

It is known as the Rutherford-Bohr model of atomic structure. The neutron was difficult to discover because it has no electrical charge but was needed to explain the different masses of different ...

Bohr’s Model of an Atom: Students get to know the Bohr’s Model of an Atom. Find out what are its limitations and the postulates it is based on.

The number of protons in an atom of any given element is always the same. Physicists call this the atomic number.So, in the above example of lead, its atomic number is 82 and that does not change ...