The statement 'Atoms of different elements are identical in all respects' is not part of Dalton's atomic theory, which asserts that atoms of different elements are unique in their properties.
The statement that is not part of Dalton's atomic theory is "d) Atoms of different elements are identical in all respects." According to Dalton's theory, one of the fundamental aspects is that atoms of different elements are different in all respects, such as size and mass. Therefore, statement d directly contradicts Dalton's postulate.
Additionally, Dalton's theory has undergone modifications since its inception, acknowledging that atoms can indeed be divided into subatomic particles, and elements can have atoms with different masses, known as isotopes. Moreover, modern science recognizes the ability to transform atoms of one element to another via nuclear reactions, thus refuting the idea that atoms cannot be created or destroyed.