N1 atoms of a radioactive element emit N2 beta particles per second. The decay constant of the element is N1 atoms of a radioactive element emit N2 beta particles per second. The decay constant of the element is June 5, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 30 - Nuclear Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related