 Mujaddid Ahmed Ijaz , Ph.D. ( Urdu : مجدد احمد اعجا ز ; June 12 , 1937 — July 9 , 1992 ) , was a Pakistani @-@ American experimental physicist noted for his role in discovering new isotopes that expanded the neutron @-@ deficient side of the atomic chart . Some of the isotopes he discovered enabled significant advances in medical research , including the development of radio-pharmaceuticals .
Ijaz was born in Karachi , Pakistan . He was a student of Sir Syed Ahmed Khan , and received his primary education in Karachi , Pakistan . He obtained his Bachelor of Science ( B.S. ) degree in physics