Question

question 4 (1 point)
what is the center of an atom called?
nucleus
proton field
neutron zone
electron cloud

Explanation:

In atomic structure, the center of an atom contains protons and neutrons and is known as the nucleus. Protons are in the nucleus, not in a 'proton field'. Neutrons are also in the nucleus, not in a 'neutron zone'. The electron cloud surrounds the nucleus, not being the center.

Answer:

A. Nucleus