Answer :
Option ( a) is correct. The chemical formula for dinitrogen trisulfide is N2S3 in which N stands for nitrogen and S stands for Sulphur.
The chemical compound dinitrogen trisulfide has the formula N2O3. It is one of the simple nitrogen oxides. It forms upon mixing equal parts of nitric oxide and nitrogen dioxide . Based on its name, it will contain 2 Nitrogen (N) atoms because it has a prefix of di and 3 Sulfur (S) atoms because it has a prefix of tri. The common name for the compound N2S3 is dinitrogen trisulfide. According to Pauling Electronegativity values, nitrogen has a greater value that of N equals to 3.0 than Sulphur that equals to 2.5. For the prefix of di we put two and for the prefix tri we put three. and here N stands for Nitrogen and s stands for Sulphur.
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