‘Plum Pudding Model’ for an atom was proposed by

The 'Plum Pudding Model' of the atom was proposed by J. J. Thomson in 1904. Following his discovery of the electron in 1897, Thomson developed this model to describe the atom as a uniform sphere of positive charge with negatively charged electrons (which he called 'corpuscles') embedded within it, similar to raisins in a pudding or blueberries in a muffin. This model suggested that atoms were divisible and electrically neutral. However, the model was later disproved by Ernest Rutherford in 1911 through his gold foil experiments, which revealed that the atom's mass and positive charge are concentrated in a central nucleus rather than being spread out. While Robert Boyle and Antoine Lavoisier contributed to early chemical principles and the definition of elements, they did not propose this specific atomic structure.