Which subatomic particles each have a neutral electrical charge?

Answer: Neutrons

Explanation:

There are three subatomic particles:

1. Electrons: that carry's a negative charge (-) and a mass of ~1/1836. They are found in the outer shell/orbit of an atom

2. Protons: that carry's a positive charge (+) and a mass of 1.6726219 * 10^-27. They are found in the nucleus of an atom.

3. neutrons: they are neutral and has no charge and a mass of 1.674929 x 10-27 kg. They are also found in the nucleus of an atom.