Alpha paicle has: September 2011
Ans. D: 2 protons, 2 neutrons Alpha paicles are simple helium nuclei (i.e. consisting of 2 protons and 2 neutrons) Remember: Alpha rays: Most ionizing Gamma rays: Maximum penetration power Cesium-137, cobalt and radium emits predominantly: Gamma rays
1 proton, 2 neutrons
1 proton, 1 neutron
2 protons, 1 neutron
2 protons, 2 neutrons