electrons and neutrons. protons and neutrons. protons and electrons. protons, neutrons, and electrons.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Neutral atoms have an equal number of
Possibilities:
- electrons and neutrons.
- protons and neutrons.
- protons and electrons.
- protons, neutrons, and electrons.

protons and electrons.