Respuesta :
An alp-ha particle is equivalent to the nucleus of a helium atom. Helium Atom = Answer.
Answer:
helium
Explanation:
An alpha particle is helium with +2 charge. Helium atoms have two protons and two neutrons in its nucleus, and two electrons orbiting the nucleus. An alpha particle just resembles the nucleus of a helium atom. An alpha particle is released by a radioactive substance that has an unstable nucleus.