Question
(d) Which statement describes the force between the alpha particle and the gold nucleus? Tick (checkmark) one box A contact force A force of attraction A force of repulsion There is no force (1) (e) Which alpha particle in the figure above experiences the largest force from the gold nucleus? Tick (checkmark) one box. A B C (1) The table below lists different models of the atom in alphabetical order: Model Bohr Nuclear Plum pudding Thy spheres that cannot be divided (1) (1) Which model in the table above was developed first?
Answer
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Answer
(d) A force of repulsion(e) The alpha particle that comes closest to the gold nucleus(1) Plum pudding model
Explanation
## Step1: The force between the alpha particle and the gold nucleus is a force of repulsion. This is because both the alpha particle and the gold nucleus are positively charged, and like charges repel each other. ## Step2: The alpha particle that experiences the largest force from the gold nucleus is the one that comes closest to the nucleus. This is because the force of repulsion between two charged particles decreases with the square of the distance between them. ## Step3: The model of the atom that was developed first among the ones listed in the table is the "plum pudding" model. This model was proposed by J.J. Thomson in 1904. The nuclear model was proposed by Rutherford in 1911, and the Bohr model was proposed by Niels Bohr in 1913. The "roy spheres that cannot be divided" model is not a recognized model of the atom.