Question

Which is a correct comparison between the modern quantum model and John Dalton’s model of the atom?
The modern model is not as widely accepted by scientists as Dalton’s model.
The modern model states that atoms of all elements are identical, whereas Dalton’s model does not.
The modern model recognizes particles in the atom, whereas Dalton’s model does not.
The modern model does not explain emission spectra, whereas Dalton’s model does.

Answer 1

"The modern model recognizes particles in the atom, whereas Dalton’s model does not."

Explanation: Dalton pictured atoms as indivisible, structureless particles. The modern quantum model includes subatomic particles (electrons, protons, neutrons) and describes electrons in quantized orbitals — which also explains phenomena like atomic emission spectra (something Dalton’s model cannot).