Regents Chemistry Exam June 2024 Question 1
1 Which description of the atom is based on the results of the gold foil experiment in the early 1900s?
(1) Atoms are small, dense, indivisible spheres.
(2) Atoms are composed of protons, electrons, and neutrons.
(3) Atoms have small, dense, positively charged nuclei.
(4) Atoms have electrons with wavelike
properties.
Solution:
Gold foil experiment led to the following conclusions: Most of the atom is empty space and inside an atom there is a small, dense, positively charged nucleus.
Choice 3 is the correct answer.
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