With the discovery of the electron, then the postulate of Dalton's first fall. Instead, Thomson (1893) proposed his theory of the atomic model is as follows:
Massive ball of atoms is very small and positively charged and in which electrons were scattered like raisins in a cake of raisins. Number of electrons in atoms with many positive charges.
Assumptions that underlie why the number of electrons must be equal to the number of positive charges is the fact that the atom is electrically neutral. This means, if the atoms have electrons with a certain amount, so that there should be neutral in it the same amount of positive charge.
Although the birth of this raisin bread model, motivated by dissatisfaction with the postulates Dalton and at the same time as improvements are expected to postulate Dalton, but nevertheless there are still people who doubt the truth of this Thomson model. This man is Rutherford. Rutherford doubt this was very reasonable especially after he made a very spectacular experiment, called the alpha particle scattering experiments. About this experiment, and also correction of raisins Thomson Rutherford model will be discussed immediately after this.
Massive ball of atoms is very small and positively charged and in which electrons were scattered like raisins in a cake of raisins. Number of electrons in atoms with many positive charges.
Assumptions that underlie why the number of electrons must be equal to the number of positive charges is the fact that the atom is electrically neutral. This means, if the atoms have electrons with a certain amount, so that there should be neutral in it the same amount of positive charge.
Although the birth of this raisin bread model, motivated by dissatisfaction with the postulates Dalton and at the same time as improvements are expected to postulate Dalton, but nevertheless there are still people who doubt the truth of this Thomson model. This man is Rutherford. Rutherford doubt this was very reasonable especially after he made a very spectacular experiment, called the alpha particle scattering experiments. About this experiment, and also correction of raisins Thomson Rutherford model will be discussed immediately after this.
