Explanation
Nucleus is heavy can be shown by deflection back while very few particle shows that it is small.
According to Bohr’s atomic model, if energy is supplied to an electron it any jumps from a lower energy level to higher energy level. Energy is absorbed in the form of quanta. ∆E = hv
Where v is frequency.
According to above postulate an electron from one Bohr stationary orbit can go to higher orbit by the absorbtion of electromagnetic radiation of particular frequency.
Quantization of energy concept is first utilized by Niels Bohr to a new model of atom.
Star effect is defined as splitting of spectral lines under the influence of an atom external electrostatic field.
Rutherford showed the presence of positively charged nucleus at the centre of atom.
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