Question

what is the postulates and demerits of expeiments or models or theories said by jj thomson to schordinger about structure of atom

Answer 1

The Structure of an AtomImagine you have a chocolate ice-cream cone and you want to share it with all your friends. You keep on giving out scoop after scoop until you are left with too little to even get a proper scoop. Soon enough your other friends also gather around you and ask for a share and so the process goes on. 
In the end you grind the ice cream cone into a small pile and start dividing the pile into even smaller piles. Soon you will be left with just a speck of the cone. Can this process go on or will it be curtailed at some point till you get a fundamental particle which can not be divided any further?. We will discuss this and more in this section.

Answer 2

Answer:

postulates

According to the postulates of Thomson's atomic model, an atom resembles a sphere of positive charge with electrons (negatively charged particles) present inside the sphere. The positive and negative charge is equal in magnitude and therefore an atom has no charge as a whole and is electrically neutral.

Demerits

the revolution of the electron in a circular orbit is not expected to be stable. any particle in a circular orbit would undergo acceleration full stop during acceleration charged particles would radiate energy full stop the revolving electron would lose energy and finally fall into the nucleus. if this was so the autumn should be highly unstable and hence matter would not exist in the form that we know.