In this paper, we have studied stability, structural and electronic properties of Endohedral fullerene C80-X3N (X = Ti, Zr, Hf) by using HF/6-31 G as the basis set. In the first step, we have done geometrical optimization. After optimization, we have done different type of calculations. It is found that the X3N molecule is more compact when the X3N is seated in the center of the C80 cage due to transfer of electrons from X3N to C80.
