Which statement correctly describes an alpha particle?

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Multiple Choice

Which statement correctly describes an alpha particle?

Explanation:
Alpha particles are helium nuclei—two protons and two neutrons bound together and carrying a +2 charge. This combination makes them highly ionizing but with limited range in matter, so they’re easily stopped by a sheet of paper or a few centimeters of air. They are not negatively charged, not a neutron, and they do not have large penetrating power in matter. Thus, describing an alpha particle as a helium nucleus is the best fit.

Alpha particles are helium nuclei—two protons and two neutrons bound together and carrying a +2 charge. This combination makes them highly ionizing but with limited range in matter, so they’re easily stopped by a sheet of paper or a few centimeters of air. They are not negatively charged, not a neutron, and they do not have large penetrating power in matter. Thus, describing an alpha particle as a helium nucleus is the best fit.

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