Answer:
1. The atom’s positive charge is located in the atom’s nucleus.
2. The atom is mostly empty space.
3. Electrons orbit around the center of the atom.
Explanation:
According to the Atomic Theory, proposed in 1911 by Ernest Rutherford, after a series of experiences. They came to this model (see below)
1. The atom’s positive charge is located in the atom’s nucleus.
The protons are positively charged and located at the nucleus which is in the center of the atom.
2. The atom is mostly empty space.
The nucleus is small and dense. The electrons, for its turn orbit around the nucleus. As the atom is the union of nucleus and electrons, and other particles, it is fair to say that an atom is a mostly empty space.
3. Electrons orbit around the center of the atom.
Like the planets revolve around the sun, the electrons orbit around the nucleus likewise.