A nucleus with mass number 220 initially at rest emits an α – particle. If the Q value of the reaction is 5.5 MeV, calculate the kinetic energy of α-particle. A nucleus with mass number 220 initially at rest emits an α - particle. If the Q value of the reaction is 5.5 MeV calculate the kinetic energy of α-particle. September 15, 2021 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 Solved Video Solutions , Facebook Messenger WhatsApp Share this:TwitterFacebook Related