Dalton had evidence for his claim which was

Which one is right
Atoms are made up of elements of the same atoms in the same proportions.

Atoms are made up of only radioactive particles.

The correct statement is: "Atoms are made up of elements of the same atoms in the same proportions."

To determine which statement is correct, we need to look at the evidence provided for each claim.

Dalton's claim, "Atoms are made up of elements of the same atoms in the same proportions," is a fundamental principle of Dalton's atomic theory. This theory states that atoms are indivisible particles and that all atoms of the same element are identical in their properties and proportions, differ from atoms of other elements, and can combine to form compounds in fixed ratios. This claim is supported by observations of chemical reactions and the existence of the periodic table, which shows that different elements have different atomic masses and properties.

On the other hand, the claim "Atoms are made up of only radioactive particles" is not supported by Dalton's atomic theory or any other established scientific theory. Radioactive particles are a type of subatomic particle that undergoes radioactive decay, meaning they are unstable and emit radiation. While certain elements may have radioactive isotopes, the majority of atoms do not consist solely of radioactive particles.

Based on this analysis, the correct statement is that "Atoms are made up of elements of the same atoms in the same proportions." This aligns with Dalton's atomic theory and is supported by numerous experiments and observations in the field of chemistry.

Based on the given information, the correct statement is:

Atoms are made up of elements of the same atoms in the same proportions.