Question

what are the limitations of J.J.THOMSON'S model of atom

Answer 1

he could not explain spectra of hydrogen
he could not explain stability of atom

Answer 2

The following are the limitations of the $\small\bf\red{J.J.\:Thomson’s\:model}$ of an atom:-

• The model failed to explain the outcome of alpha particle scattering which was conducted by Rutherford. The model failed to depict why majority of these alpha particles pass through gold foil while some are diverted through small and big angles, while some others rebound completely, returning back on their path.
• It did not provide any experimental evidence and was established on imagination.