Steric effect for the formation of N-2 (B, (3)Pi(u) in the energy transfer reaction of Kr (P-3(2),) + N-2 has been measured using an oriented Kr (P-3(2), M-j = 2) beam at a collision energy of 0.07 eV. The N-2 (B, (3)Pi(u)) emission ntensity was measured as a function of the magnetic orientation field direction in the collision frame. A significant atomic alignment effect on the energy transfer probability was observed. This result was compared with that for the formation of N-2 (C, (3)Pi(g)) in the Ar (P-3(2)) + N-2 reaction. Despite the large difference on the energy transfer cross-section, the atomic alignment dependence for Kr (P-3(2)) + N-2 is found to be analogous to that for Ar (P-3(2)) + N-2 It is revealed that the configuration of inner 4p (3p) orbital in the collision frame gives an important role for the stereoselectivity on electron transfer process via the curve-crossing mechanism.