compare the radii of two nuclei having mass number 3 and 81 respectively Share with your friends Share 4 Mohammed Naved answered this Dear Student We know that R = RO A 13therefore,R1 = RO A1 13and R2 = RO A2 13So,R1R2 = A1A213=> R1R2 = 38113=> R1R2 = 12713=> R1R2 = 13=> R1 = 13 R2 Regards 7 View Full Answer