J.J. Thomson proposed that the nucleus of an atom constains only nucleons.

Who proposed the spectrum of hydrogen atom ?

Dalton proposed atomic theory based on…………..

(A) For the scattering of a.-particles at a large angles. only the nucleus of the atom is responsible. (R) : Nucleus is very heavy in comparison to electrons.

The first model of an atom was proposed by

What are the postulates of Thomson's model of atom?

Why a nucleus has mass less than the sum of the masses of the individual nucleons in it.

On the basis of Thomson's model of an atom, explain how the atom is neutral as a whole.

In a process a system does 140j of work on the surroundings and only 40J of heat is added to the system. Hence change in internal energy is