Free radiation I suppose. But gamma radiation, is charge free. As is UV, IR, ... ..
The answer is gamma rays. Alpha rays have a charge of +2, or two protons, and a beta ray has a charge of -1, or an electron.
Electromagnetic radiation is the type of radiation that gives off particles or energy and has no mass and no charge. This type of radiation is considered pure in form.
Neutrons and neutrinos
Gamma radiation
Gamma, it's basically energy
Alpha particles
Gamma particles
Gamma radiation
beta
Gamma rays are a type of electromagnetic radiation, which is a type energy. Because a gamma ray is a type of energy, it has no mass.
an energy ray with no mass and no charge
Gamma radiation is high-energy electromagnetic radiation given off by a radioisotope (the one with the highest frequency). It is made up of 2 particles with an overall charge of 2+. <-- Wrong. Gamma radiation has no charge, and no mass. Extremely penetrating.
gamma
This is a positron.
Gamma
Alpha radiation, which is the same as helium-4 nuclei.
Gamma radiation
have, not has, and I would assume that it has electrons to be electromagnetic radiation, and therefore mass
Neutron
No Gamma Rays do not have mass. All electromagnetic radiation has no mass.
an alpha particle
4n would fit your criteria if it existed, but it doesn't. A helium atom would work to, but they aren't a form of radiation. So, unless I'm forgetting something, I don't believe there's an answer to your question.
beta
it remains the same gamma rays have no mass and no electrical charge