Question

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.

Answer 1

Answers:

Nuclear reactions can change an atom of one element into an atom of another element. ( fourth choice)

Atoms contain smaller particles: protons, neutrons, and electrons.( first choice)

Atoms of a given element can have different numbers of neutrons.( third choice)

Answer 2

Atoms contain smaller particles: protons, neutrons, and electrons.

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.

Step-by-step explanation:

Electrons, protons, and neutrons, and isotopes had not yet been discovered.

The only statement that agrees with Dalton's atomic theory is

B. Atoms of a given element can bond to other atoms only in specific ways. Dalton used this postulate to formulate the Laws of Definite Composition and of Multiple Proportions.