Final answer:
Massless particles, such as photons, are neutral and chargeless because they do not have any charged constituents.
Step-by-step explanation:
Massless particles, such as photons, are neutral and chargeless because they do not have any charged constituents. They do not have protons, electrons, or any other particles that carry an electric charge. For example, photons are elementary particles that have zero charge and are made up of a combination of electric and magnetic fields. Since they do not have any charged particles, they do not carry any electrical charge.