Question

which description best describes an alpha particle? an alpha particle has no atomic number. an alpha particle is attracted to a positive electrode. an alpha particle has the same composition as a helium-4 nucleus. an alpha particle has no mass

Answer 1

Answer: The correct description for an alpha particle is "an alpha particle has the same composition as a helium-4 nucleus"

Step-by-step explanation:

An alpha particle is composed of 2 protons and 2 neutrons. Helium atom nucleus has two protons and two neutrons, and two electrons revolve around its nucleus. If we doubly ionized the helium atom, we obtained an alpha particle.