The effect of mass transfer (suction or injection) past the mixed convection boundary layerflow near the stagnation point on a permeable vertical flat plate with thermal radiation, heat generationand chemical reaction are investigated in this study. The external flow impinges normal to the heated plate and the surface temperature and velocity are assumed to vary linearly with the distance from the stagnation point. The governing system of partial differential equations are first transformed into a system of ordinary differential ...