What was the atomic theory about? A) the existence of isotopes
B) the properties of the nucleus
C) the structure of the atom
D) the existence of electrons

C

Explanation:

According to John Dalton's Atomic theory, it was about the structure of the atoms: "Each chemical element is composed of extremely small particles that are indivisible and cannot be seen by the naked eye, called atoms"

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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