Which part of Dalton’s theory did Thomson’s findings dispute?
Atoms of the same element have the same mass.
Atoms of different elements have different masses.
Compounds contain atoms of more than one element.
The atom is the smallest known particle of matter.
The part of Dalton's theory that Thomson's findings disputed was that atoms are indivisible and the smallest known particle of matter. Thomson's discovery of the electron showed that atoms were actually made up of smaller subatomic particles.
so is it a b c or d
The part of Dalton's theory that Thomson's findings disputed is statement d:
The atom is the smallest known particle of matter.