Which of the following is/are the limitations of Rutherford model of the atom
(I) The model couldn't explain the line spectra
(II) The model couldn't explain that electron will not emit energy in orbits
(III) The model failed to explain the existence of the nucleus
(IV) The model failed to calculate the velocity of the electron
1
(I) & (III) only
2
(I) & (IV) conly
3
(I) & (II)only
4
(III) & (IV)