In the nineteenth century scientists determined that atoms c - GED Prep
Question
In the nineteenth century, scientists determined that atoms consist of electrons and protons. J. J. Thomson modeled the atom as a uniform arrangement of electrons inside a positive sphere of charge. In the early twentieth century, Earnest Rutherford concluded from experiments that most of the mass and all of the positive charge of atoms were concentrated in the center of the atom, with the negatively charged electrons orbiting the center.
Which statement describes one feature of the Rutherford-Bohr atom model that the Thomson model does not share?
Answers
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Explanation
The correct answer is: The Rutherford-Bohr model restricts the positive charge of the atom to the nucleus.
The key difference between the two models shown in the image is the distribution of positive charge. In Thomson's model, the positive charge is spread throughout a sphere, while in the Rutherford-Bohr model, it's concentrated in a central nucleus. This concentration of positive charge in the nucleus is a unique feature of the Rutherford-Bohr model, not present in Thomson's "plum pudding" model, making it the distinguishing characteristic asked for in the question.
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