12. the center of the atom is called the \nelectron \nneutron \nnucleus \nproton
12. the center of the atom is called the \nelectron \nneutron \nnucleus \nproton
Answer
Brief Explanations:
In atomic structure, the center of an atom is known as the nucleus. It contains protons and neutrons, while electrons orbit around it.
Answer:
Nucleus