[en] Sodium praseodymium silicate glasses of nominal composition 0.3Na₂O xPr₂O₃ (0.7-x)SiO₂, where 0≤x≤0.10, have been studied by magnetisation and X-ray photoelectron spectroscopy (XPS). The magnetisation data fail to collapse to a single curve in the M versus H/T representation for all values of x and the spread increases with x, indicating an increase in the magnetic exchange interaction. The M versus H data acquired at different temperatures have been fitted with a Brillouin function by refining the number of Pr³⁺ ions in each glass sample. It was found that most of the Pr ions are in Pr³⁺ valence state and only a small fraction (≤5%) in the Pr⁴⁺ state. Analysis of the XPS line shape indicates only the presence of Pr³⁺ ions in these glasses