Discovery Of Sub Atomic Particles

J. chadwick discovered a sub atomic particle which has no charge but has mass nearly equal to that of a proton.Name the particle and give its location in an atom.

Discovery Of Protons

Discovery Of Protons

Discovery Of Electron

Rutherford's alpha particle scattering experiment was responsible for the discovery of (a) Atomic Nucleus , (b) Electron ,(c ) Proton ,(d) Neutron.

Discovery Of Electrons

The kinetic energy of a sub-atomic particle is 5.65xx10^(-25)J . Calculate the frequency of the particle wave.

There are two elemetns overset(26)underset(13)A and overset(26)underset(14)B .Find the number of sub atomic particles in each of these.What is the relations between these atoms?