A stationary thorium nucleus ( A = 220, Z = 90 ) emits an alpha particle with kinetic energy E alpha. What is the kinetic energy of the recoiling nucleus ? A stationary thorium nucleus ( A = 220 Z = 90 ) emits an alpha particle with kinetic energy E alpha. What is the kinetic energy of the recoiling nucleus ? October 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related