The formula, including the charge, for a chromate ion is CrO4-1.
CrO4-2
Sn(CrO4)2 Tin 4 means that the tin is a cation with a +4 charge. Chromate is a polyatomic ion with the formula (CrO4)-2. Since the tin ion has a +4 charge in this case, and the chromate ion has a -2 charge, there is a 1:2 ratio of tin ions to chromate ions.
The chromate ion is CrO42-
Two types: silver (Ag+) and chromate (CrO4-2) And within the formula (Ag2CrO4) there are two silver ions and one chromate ion for a total of three ions.
The formula, including the charge, for a chromate ion is CrO4-1.
The formula for a chromate ion is CrO4-2, and its charge is -2.
CrO4-2
Sn(CrO4)2 Tin 4 means that the tin is a cation with a +4 charge. Chromate is a polyatomic ion with the formula (CrO4)-2. Since the tin ion has a +4 charge in this case, and the chromate ion has a -2 charge, there is a 1:2 ratio of tin ions to chromate ions.
The chromate ion is CrO42-
Two types: silver (Ag+) and chromate (CrO4-2) And within the formula (Ag2CrO4) there are two silver ions and one chromate ion for a total of three ions.
The formula for Copper (II) Chromate is CuCrO4.The copper has a 2+ charge (Cu2+) and the chromate ion has a 2- charge ( (CrO4)2-).Since the charges balance each other out, therefore, we get CuCrO4.
The chromate ion has a charge of 2-. Its symbol is CrO42-.
Yellow
Ammonium chromate = (NH4)2CrO4
Cesium Chromate = Cs2CrO4
Silver(I) chromate = Ag2CrO4