Which of the following is a Alpha emitter?: (A) Plutonium-236, (B) Carbon-11, (C) Oxygen-15, (D) Samarium -153
Answer is A. Alpha (a) radiation: Consists of heavy, positively charged paicles, each of which contains two protons and two neutrons. Alpha Emitters : Americium-241 Plutonium-236 Uranium-238 Thorium-232 Radium-226 Radon-222 Polonium-210 84