Question

which of the following describes an x - ray photon? high - speed electron heavy subatomic particle high - energy charged particle massless package of energy

Explanation:

X - ray photons are part of the electromagnetic spectrum. They are massless and represent a package of energy. A high - speed electron is a different entity, a heavy subatomic particle could refer to protons or neutrons, and x - ray photons are uncharged.

Answer:

Massless package of energy