[en] The Bohr quantization rule for angular momentum is applied to one of the simplest nuclear systems, the deuteron. The interaction energy between the neutron and the proton is taken to be of the Yukawa type, with a strength g². Circular orbits are considered and g² is estimated using the known binding energy of the deuteron. The resulting value of g² compares favourably with accepted values. Another feature which the model predicts correctly is that the deuteron has a single stable state, the ground state. This simple model may thus present an interest, from a pedagogical viewpoint, at the elementary level. (author)