Which type of radiation has the lowest penetration ability?

Question

Quizplus · Accepted Answer

Alpha radiation consists of helium nuclei and has the lowest penetration ability of the listed radiation types. Alpha particles can be stopped by a sheet of paper or the outer layer of human skin. Beta and gamma radiation have higher penetration abilities, and neutrons have the ability to penetrate even further. Positrons are relatively rare in everyday situations and have similar properties to electrons, so they have a higher penetration ability than alpha radiation.

Which Type of Radiation Has the Lowest Penetration Ability