Question

current attempt in progress
the nucleus of an atom:
○ has a very small density.
○ occupies a very small volume.
○ contains only electrically charged subatomic particles.
○ has a neutral electrical charge.

Explanation:

The nucleus of an atom is extremely small in volume compared to the overall size of the atom. It has a very high density as it contains most of the atom's mass. It contains protons (positively - charged) and neutrons (neutral), so it is not only made of electrically - charged subatomic particles and it has a positive charge due to protons.

Answer:

occupies a very small volume.