- A proton has a positive 1 electric charge
- An electron has a negative -1 electric charge
- Therefore, equal numbers of protons and electrons result in a neutral 0 electric charge

- Equal numbers of protons and electrons result in a neutral 0 electric charge
- A neutron has a neutral electric charge
- Hence, equal numbers of protons and electrons and any number of neutrons result in a neutral 0 electric charge

- Equal numbers of protons and electrons and any number of neutrons result in a neutral 0 electric charge
- An atom is made of protons / neutrons / electrons
- So, if an atom has an equal number of protons and electrons, then the atom will have a neutral charge

- If an atom has an equal number of protons and electrons, then the atom will have a neutral charge
- An normal atom has a neutral electric charge
- So, that atom has an equal number of protons and electrons

So, that atom has an equal number of protons and electrons
Q: An atom will always have
Context:
- A proton has a positive 1 electric charge 
- A neutron has a neutral electric charge 
- An normal atom has a neutral electric charge 
- An electron has a negative -1 electric charge 
- An atom is made of protons / neutrons / electrons