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.

Explanation:

• Analyze each option:
• Option 1: The modern quantum model is widely accepted, while Dalton's model is outdated. So this is incorrect.
• Option 2: Dalton's model considered atoms as indivisible, while the modern model (quantum) recognizes subatomic particles (protons, neutrons, electrons). This is correct.
• Option 3: Dalton's model stated atoms of the same element are identical, and the modern model also acknowledges that atoms of an element have the same number of protons (though isotopes have different neutrons). So this is incorrect.
• Option 4: The modern quantum model (like Bohr - modified for quantum) explains emission spectra (electron transitions between energy levels), while Dalton's model couldn't. So this is incorrect.

Answer:

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