Whose work led to a model that suggested that electorns surround a central positive code?

Question

And also whose work led to model that atoms contain electrons and protons?

Answer 1

J J Thompson discovered the electron a suggested that they were stuck in a positively charged pudding
Rutherford found that the positively part of the atom was << than the size of the atom
http://en.wikipedia.org/wiki/Rutherford_model