What is the oxidation number of sulphur in Na2S4O6 (a) 2/3 (b) 3/2 (c) 3/5 (d) 5/2 What is the oxidation number of sulphur in Na2S4O6 (a) 2/3 (b) 3/2 (c) 3/5 (d) 5/2 November 23, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,