What part of an atom takes up most of the space of that atom?

nucleus

The nucleus makes up a tiny proportion of the space occupied by an atom, while the electrons make up the rest. According to quantum electrodynamics, the space is filled by an electron field around the nucleus which neutralizes its charge and fills the space defining the atom size.

The electron cloud!

Explanation:

the electron cloud constitutes the majority of the “space” in each atom. To have a better point of view, if the nebulas was a marble, the electron cloud would be 1 football field away from it.

Have a nice day ;)

-Hauns5532

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

because if the tool that you are using is not balanced it there would be false mass.