which is a characteristic of the part of the atom marked \a\?\nit contains most of the mass.\nit is…

which is a characteristic of the part of the atom marked \a\?\nit contains most of the mass.\nit is negatively charged.\nit is mostly empty space.\nit is composed of electrons.
Answer
Brief Explanations:
The part marked "A" is the electron - shell. Electrons are negatively charged and are located in these shells. The nucleus contains most of the mass. The nucleus is mostly empty space in a different context related to the sub - atomic particles within it. The nucleus is composed of protons and neutrons, not electrons.
Answer:
It is negatively charged.