What is the Plum Pudding Model?
A plum pudding model is a historical scientific model of the atom that was proposed by J.J. Thomson in 1904, shortly after he discovered the electron. The model tried to explain two properties of atoms that were known at that time: electrons are negatively charged particles, and atoms have no net electric charge.
The plum pudding model suggested that an atom consists of a sphere of positive charge, called the pudding, with electrons embedded in it, like plums in a desert. The electrons were arranged in shells and balanced the positive charge of the sphere.
The plum pudding model was the first model to assign a specific inner structure to an atom, and it was based on experimental evidence and mathematical formulas. However, it was soon replaced by a more accurate model of the atom after new discoveries were made.
