Keywords: Phosphonic-acid-3D-balls-A.png Ball-and-stick model of the phosphonic acid molecule H<sub>3</sub>PO<sub>3</sub> one of two tautomers of phosphorous acid Structure calculated using HF/6-31G in http //www wavefun com/products/macintosh/Student/mac_student html Spartan '04 Student Edition Image generated in http //accelrys com/products/discovery-studio/visualization/discovery-studio-visualizer html Accelrys DS Visualizer Own 2008-08-05 Ben Mills Benjah-bmm27 Images by Ben Mills Phosphorous acid |