what is drawbacks of Rutherford model of atom
Answers
Rutherford’s model could not explain the stability of the atom. This is because according to Rutherford’s model, an atom consists of a small heavy positively charged nucleus in the centre and the electrons were revolving around it.
These revolving electrons would loose energy as they are the charged particles and due to acceleration charged particles would radiate energy.
Thus, the orbit of the revolving electron will keep on becoming smaller and smaller, following a spiral path as shown in figure and ultimately the electron should fall into the nucleus. In other words, the atom should collapse.
Answer:
Rutherford's atomic model has following drawbacks:
(1) According to the classical electromagnetic theory, a revolving charged particle like electron should emit radiation and lose energy. Due tonthis, electron should come closer to the nucleusnby following a spiral path and finally fall into the nucleus, giving unstable atom. But innpractice this does not happen.
(2) The orbital motion is an accelerated motion accompanied by continuous change in the velocity of electron due to changing direction.
(3) Orbital motion of an electron dos not explain thenchange in energy and hence atomic spectrum.
(4) The electron would follow a spiral path and fall into the nucleus.
(5) This model does not explain the distribution of electrons around the nucleus and their energies.