What was the plum pudding model?

Question

need ans before wednesday 19th january

Answer 1

I can't remember the exact explanation, but basically the plum pudding model was one of the original theories for the structure of an atom, and says that electrons (the plum pieces) were randomly dispersed within some finite space (the pudding) around the nucleus.



This was found to be incorrect.

Answer 2

In Thomson’s "Plum Pudding Model" each atom was a sphere filled with a positively charged fluid. The fluid was called the "pudding." Scattered in this fluid were electrons known as the "plums." The radius of the model was 10-10 meters.



Thomson suggested that the positive fluid held the negative charges, the electrons, in the atom because of electrical forces. However, this was only a very vague explanation and failed to provide any definite answers.



But in fact the electron density in the atom is given by the square of the norm of the Schrodinger wave function. The electrons rather appear to be observed as continuous negative clouds which form their orbits then as discrete point particles.

Answer 3

Dutch has a lot of it. Around 1900 it was thought that atoms were made of negative electrons (which had just been discovered) embedded in some sort of positive stuff, like plums in a pudding. Nowadays, you might think more of a blueberry muffin. The model didn't last too long as the nucleus was soon discovered and it was bye-bye plum pudding model.

Answer 4

I think it's a big girl modelling, not sure though :S

Hope I helped :)