Which of the following is NOT part of Dalton's Atomic Theory?
A) Each element is composed of tiny indestructible particles called atoms.
B) All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.
C) Atoms combine in simple, whole-number ratios to form compounds.
D) Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
E) All of the above are part of the atomic theory.
Answer: D