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Explanation:
Thomson model compared the structure of the atom with a watermelon in which the red portion signifies the positive charge and the electrons which are negatively charged are embedded in this portion as seeds are embedded in the watermelon.
The structure was not able to explain the stability of the atom and also the Rutherford experiment which is:
Rutherford conducted an experiment in which he took a thin gold particle film on which he passes alpha- particles. He noticed that:
- Most of the alpha particles get through the film and can be detected by the detector.
- Around small portion of the alpha particle deflected at small angles.
- A very very few alpha particle (approximately 1 out of 1 million alpha particles) just retraced their path which means come back from the center.
He concluded that:
Most of space of atom is empty and in center of atom , there is solid mass which is cause of alpha particles to come back. He gave term nucleus to this solid mass.
The results of the experiments of Rutherford's coworkers proved that most of the atomic structure was empty space except the nucleus where most of the atomic mass was concentrated.
What was the Thomson model of the atom?
The Thomson model of the atom also known as the plum-pudding model envisions that atom is a sphere in which positively and negatively charged particles were embedded.
However, when Rutherford and his coworkers bombarded gold foil with alpha particles, they obtained the following results:
- most of the particles passed through undeflected
- A few particles were deflected at an angle
- Only very few particles were reflected
Therefore, the conclusion was that most of the atomic structure was empty space except the nucleus where most of the atomic mass was concentrated.
Learn more about Rutherford's atomic model at: https://brainly.com/question/1853483
