 So, here we are going to understand about the drawback of Rutherford model, so what is the drawback we have for Rutherford model and why we discarded it, so what happens according to electromagnetic theory whenever charged particle in motion, whenever according to electromagnetic theory whenever charged particle is in motion under the influence of an attractive force, whenever charged particle in motion under the influence of an attractive force right, the charged particle must emits energy in the form of radiation this is the electromagnetic theory right. Electromagnetic theory suggests what? Magnetic theory a charged particle particle in motion under the influence of an attractive force emits energy in the form of in the form of radiation ok. So, in every turn the charged particle has to emit energy. So, for example suppose the electron is moving in this path since it is moving under the influence of an attractive force which is towards the nucleus it has to release energy in every turn right and that is why it won't follow the same path in every turn. Since it is releasing energy continuously that is why the same path it won't follow in every turn and it has to change its path like this and it will follow a spiral path and finally it should fall down into the nucleus ok. So, like this the electron is moving in every path right and then it falls down into the nucleus right which makes an atom falls in the nucleus in the nucleus which makes an atom an atom unstable. When the electron falls into the nucleus the atoms becomes unstable hence, but the atom is quite stable that we know already right. So, hence this postulates of Rutherford model does not stand true with the electromagnetic theory this is the problem or drawback with this model we have and hence we have discarded this particular model ok. Also the another thing Rutherford model did not talk about the orientation of electron the velocity of electron the energy of the electron there were no information about all these for this electron and all right. That is why we have discarded this particular model right and again we get a different model that we called as Bohr atomic model, but to understand Bohr atomic model we have to understand the dual nature of matters or light that is wave nature or particle nature. So, next class we will discuss first the dual nature of matters then we will go to the Bohr atomic model. Thank you.