Question

question 20 of 25
what was the atomic theory about?
a. the existence of electrons
b. the properties of the nucleus
c. the existence of isotopes
d. the structure of the atom

Explanation:

Atomic theory focuses on the structure of the atom, explaining its composition and how it behaves. It encompasses the understanding of sub - atomic particles and their arrangement within the atom. Options A, B, and C are more specific aspects related to atoms but not the overall focus of atomic theory.

Answer:

D. The structure of the atom