AbstractThe intermolecular nuclear magnetic relaxation rate of the proton in the water molecules of diamagnetic electrolyte solutions is calculated. The relaxation process is due to the magnetic dipole‐dipole interaction. The present treatment is an extension of the method developped by Torrey. The most important feature of the present paper is the inclusion into the theory of the rotational diffusive motion of the rigid hydration spheres. The results given may be easily extended to protons in non‐aqueous solvent molecules of moderate s