Question

what is the name of item \3\ in the model of the atom? neutron electron proton

Explanation:

In an atom model, protons and neutrons are in the nucleus (the central part shown in red - blue in the image), and electrons orbit around the nucleus. Item "3" is in the central part of the atom model which is the nucleus. Protons are positively - charged particles in the nucleus.

Answer:

proton