4. Which one of the following is NOT one of the postulates of Dalton's atomic theory? (0.1 points) A) Afoms are composed of protons, neutrons, and electrons. B) All atoms of a given element are identical, while the atoms of different elements are different and have different properties. C) Compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms. D) Each element is composed of extremely small particles called atoms