Which of these discoveries contradict components of Dalton’s atomic theory? Check all of the boxes that apply. Atoms contain smaller particles: protons, neutrons, and electrons.

Atoms of a given element can bond to other atoms only in specific ways.

Atoms of a given element can have different numbers of neutrons.

Nuclear reactions can change an atom of one element into an atom of another element.

All atoms of a given element have the same number of protons.