How is the modern atomic theory different from Daltons atomic theory?
The modern atomic theory includes the concept of isotopes, which Dalton's theory did not address. Furthermore, modern atomic theory describes atomic structure using quantum mechanics, which was not known in Dalton's time. Additionally, modern atomic theory recognizes the existence of subatomic particles such as protons, neutrons, and electrons within an atom, while Dalton's theory considered atoms as indivisible.