Question

An atom is described as a nucleus of protons and neutrons surrounded by a

Answer 1

an atom is described as a nucleus of protons and neurons surrounded by a negatively charged particle(s) called electron.

Answer 2

Step-by-step explanation:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.