SAT Subject Physics Practice Question 674: Answer and Explanation

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Question: 674

10. The mass of the atom is

A. equally dispersed throughout the entire atom cloud.
B. equally divided between all its parts: the electrons, neutrons, and protons.
C. concentrated in the orbital cloud.
D. concentrated in the nucleus.
E. determined by spectroscopic analysis.

Correct Answer: D


The correct answer is (D). Rutherford found that most of the mass of an atom is concentrated in the nucleus of the atom.

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