The oxidation number of each atom can be calculated by subtracting the sum of lone pairs and electrons it gains from bonds from the number of valence electrons. Na2SO4. The oxidation number of N in N2H4 is-2. 3.11 g. Select the compound in which sulfur has its highest possible oxidation number. In almost all cases, oxygen atoms have oxidation numbers of -2. Assign an oxidation number of -2 to oxygen (with exceptions). 0. therefore the oxidation number of S is +6 in the above compound. H2S 2. Select the compound in which sulfur has its highest possible oxidation number. Get more help from Chegg. Bonds between atoms of the same element (homonuclear bonds) are always divided equally. Calculate the oxidation number of each sulphur atom in the following compounds: (a) Na2S2O3 ( ... (c) Na2SO3 (d) Na2SO4 To find the correct oxidation number for KMnO4 (Potassium permanganate), and each element in the compound, we use a few rules and some simple math. 3.33 × 1023 Na ions. H2S SO2 SCl2 H2SO3 Na2SO4 Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. Select the compound in which sulfur has its highest possible oxidation number. the oxidation number of Na is +1.so in this compound it becomes +2 since it is Na2.then oxidation number of O is -2 and so in this compound it becomes -8.taking the oxidation number of S to be x,eqn becomes 2+x-8=0. ... How many sodium ions are present in 325 mL of 0.850 M Na2SO4? The oxidation number of Na in Na2SO4 is a. Different ways of displaying oxidation numbers of ethanol and acetic acid. x=+6. Figure 1. What is the oxidation number of sulfur in Na2SO4? Expert Answer 100% (1 rating) Previous question Next question Get more help from Chegg. ; When oxygen is part of a peroxide, its oxidation number is -1. Answer to: Determine the oxidation number of sulfur in the compound Na2SO4. 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