2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/146883We consider the zero mass limit of a relativistic Thomas-Fermi-Weizsaecker model of atoms and molecules. We find bounds for the critical nuclear charges that ensure stability.8 pages, LaTexMathematical PhysicsSpectral Theory35P15Stability of atoms and molecules in an ultrarelativistic Thomas-Fermi-Weizsaecker modeltext