Keywords: Dithionic-acid-3D-balls.png Ball-and-stick model of the dithionic acid molecule H<sub>2</sub>S<sub>2</sub>O<sub>6</sub> Structure calculated using HF/6-31G in http //www wavefun com/products/macintosh/Student/mac_student html Spartan '04 Student Edition Own 2008-07-14 Ben Mills Benjah-bmm27 Images by Ben Mills Dithionic acid |