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Question 2 • Chemistry

Which is a correct comparison between the modern quantum model and John Dalton’s model of the atom?

Answer
A
The modern model is not as widely accepted by scientists as Dalton’s model.
B
The modern model states that atoms of all elements are identical, whereas Dalton’s model does not.
C
The modern model recognizes particles in the atom, whereas Dalton’s model does not.
D
The modern model does not explain emission spectra, whereas Dalton’s model does.

Explanation

The modern quantum model describes atoms as having smaller particles, including protons, neutrons, and electrons. Dalton’s model treated atoms as indivisible solid spheres, so it did not include subatomic particles. Therefore, the correct comparison is that the modern model recognizes particles within atoms, while Dalton’s does not.

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