![]() ![]() On cross multiplication, 2 with Cr and 3 with S, the chemical formula of the Chromium(III) sulfide turn out to be- $\text$. In this video we'll write the correct formula for Chromium (III) sulfide (Cr2S3).To write the formula for Chromium (III) sulfide we’ll use the Periodic Table. This represents the formula SnF 2, which is more properly named tin(II) fluoride. So, the chemical formula of Chromium(III) sulfide is: ![]() On the other hand, Sulphur has a tendency to gain two electrons and thus exhibits -2 oxidation state in their compounds and so, its valency is -2. It means that the chromium atom loses three electrons from its valence shell and thus exhibits 3 oxidation state in Chromium(III) sulfide and so, its valency is 3. In Chromium(III) sulfide, Chromium atoms have 3 charge on it. on the basis of their tendency to lose or gain the electrons. We can find the formula of Chromium(III) sulfide by using their valency i.e. Chromium has a 3 charge as indicated by the roman numeral in the name. Now, find the chemical formula.Ĭhromium(III) sulfide is an inorganic compound and it consists of the elements chromium and Sulphur and Chromium(III) sulfide is formed by the action of the Sulphur on the chromium and The formula for chromium(III) sulfide is Cr2S3. The three waters added back in balance the change from ammonia to ammonium as well as the three hydroxides on the chromium(III) hydroxide. Valency of Cr is 3 and that of the S is -2. Because Chromium (III) sulfite has a polyatomic ion (the group of non-metals after the metal) we'll need to use a table of names for common polyatomic ions, in addition to the Periodic Table. Hint: The chemical formula of Chromium(III) sulfide is found by using the concept of the valency of the atom which is the capacity of any substance to gain/lose the electron. ![]()
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