Plum pudding model

Thomson proposed the plum pudding model: the atom was a ball of positive charge with negative electrons embedded throughout it. The positive charge was spread across the whole atom rather than concentrated in one place.

Thomson proposed the plum pudding model: electrons were embedded throughout a sphere of positive charge. The positive and negative charges could balance to make an atom neutral. Unlike Dalton’s solid sphere, Thomson’s atom contained a subatomic particle, but it had no central nucleus.

Thomson proposed the plum pudding model: electrons embedded throughout a ball of positive charge. The positive and negative charges balanced, making the atom neutral.