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The oxidation number of sulphur in H2S is 2.
There are two s atoms. One shows 0 and other shows+6.
Oxidation no of sulphur is +2.
It would have been plus seven if possible, however the maximum is the number of valence electron of sulfur to be donated, so that is clearly +6 (six!).In H2S2O7 the oxidation number is +6
6+
The oxidation number of sulphur in H2S is 2.
There are two s atoms. One shows 0 and other shows+6.
Sulphur has 6 valence electrons. So its maximum oxidation number is +6.
Oxidation no of sulphur is +2.
It would have been plus seven if possible, however the maximum is the number of valence electron of sulfur to be donated, so that is clearly +6 (six!).In H2S2O7 the oxidation number is +6
6+
The oxidation number in atomic sulfur is 0. The oxidation number of sulfide ion is -2. With oxygen and other non metals, it makes numerous ions where its oxidation number varies from -2 to +6.
Things are complicated if we use the term valency. It is better to use the term Oxidation state or Oxidation Number. In SO2, the oxidation state of sulphur is +4 and In SO3, the oxidation state of sulphur is +6.
Atomic sulfur has oxidation number 0. The oxidation number of the sulfide ion is -2. During formation of a wide variety of compounds, the oxidation status of sulfur may differ from -2 to +6.
+4 for carbon, -2 for each Sulphur
-2 for each O, +6 for S
+1 for each H and -2 for sulphur