What is component of John Dalton’s atomic theory?

•Matter is made up of smallest indivisible particle named as atom.

•All atom of  same element have equal atomic mass and identical properties.

•Compounds are made up two or more different types of atoms.

•In a chemical reaction rearrangement of atoms takes place.

•Atoms of different elements differ in mass and size.

sry but any answer choices

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates