Which of the following were included in Dalton's Atomic Theory but were later shown to be incorrect?   Atoms of a given element are identical in size, mass, and other properties. Atoms cannot be subdivided, created, or destroyed in chemical reactions. Atoms of different elements can combine in simple, whole-number ratios.    a I only  b I and II only  c II and III only  d I, II, and III

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.