Where is the volume of the atom located?

The nucleus is the atom's central core. while the  surrounding the nucleus is a cloud of electrons, which makes up most of the atom's volume.

Explanation:

its the center of an atom

The nucleus

Explanation: The nucleus is the atom's central core and contains more than 99.9 percent of its mass. Surrounding the nucleus is a cloud of electrons, which makes up most of the atom's volume .