The heat and mass transfer mechanism has gained importance in technical, industrial, and engineering processes following the use of thermal radiation in nanomaterials with improved thermal properties. Nanomaterials with improved thermal characteristics can be utilized in the formulation of energy to expand the industrial growth of countries. The effects of thermal radiation on the rate-type fluid passing through a Riga plate are examined in this article. The impact of thermophoresis and Brownian motion has significant importance. The mathematical explanation of the problem is given with the help of partial differential equations. The coupled nonlinear form of ordinary differential equations is achieved via the appropriate methodology of similarity variables. Utilizing suitable MATLAB software, we have achieved numerical solutions for simplified nonlinear equations. The physical parameters have exceptional impacts on the behavior of velocity, temperature, and concentration fields based on graphs. From this study, it is concluded that the Deborah number has an increasing effect on the pattern of fluid velocity. The rising values of the Prandtl number reduce the temperature profile while the higher values of the radiation parameter escalate the temperature profile. (c) 2022 Sharif University of Technology. All rights reserved.