Common Polyatomic Ions

The correct chemical formula for acetate is C2H3O-1, which indicates the presence of 2 carbon atoms, 3 hydrogen atoms, and 1 oxygen atom in the acetate ion. The incorrect answers provided do not accurately represent the chemical composition of acetate.

Carbonate is a polyatomic ion with a charge of -2, composed of one carbon atom bonded to three oxygen atoms. The chemical formula for Carbonate is CO3-2.

Arsenate is a polyatomic anion with the chemical formula AsO3-3, consisting of one arsenic atom bonded to three oxygen atoms in a trigonal pyramidal shape. The incorrect answers provided are variations of arsenic compounds that do not match the specific formula for arsenate.

Azide is a polyatomic anion with the formula N3 -1. It consists of three nitrogen atoms in a linear arrangement with a formal charge of -1.

Chromate is a polyatomic anion consisting of one chromium atom and four oxygen atoms carrying a -2 charge, hence the chemical formula CrO4-2.

Citrate is an ion that is formed from the citric acid molecule and is written as C6H5O7-3 due to its charge and chemical composition.

Benzoate is a chemical compound with the formula C7H5O2-1, commonly used as a food preservative.

Dichromate is a polyatomic ion with a charge of -2 and consists of two chromium atoms and seven oxygen atoms.

Bromate is a polyatomic ion with a charge of -1 and it is composed of bromine and oxygen atoms. The correct formula for bromate is BrO3-1.

Hexachloroplatinate (IV) is a coordination complex with a platinum atom at its center bonded to six chloride ions, resulting in the chemical formula PtCl6-2.

Hexafluorosilicate is a polyatomic anion with 6 fluorine atoms surrounding a central silicon atom with a total charge of -2. The correct chemical formula for Hexafluorosilicate is SiF6-2.

Phosphate is a polyatomic ion with the chemical formula of PO4-3. It consists of one phosphorus atom and four oxygen atoms, with a charge of -3.

The correct chemical formula for cyanide is CN-1, which consists of a carbon atom bonded to a nitrogen atom with a negative charge.

Molybdate is a compound containing molybdenum and oxygen ions, forming the anion MoO4-2.

Phosphite is a polyatomic ion with a chemical formula of PO3-3, consisting of one phosphorus atom and three oxygen atoms.

Formate refers to the conjugate base of formic acid, which is HCOOH. The chemical formula CHO2-1 represents the formate ion with a charge of -1. CO2 is carbon dioxide, CH4 is methane, and C2H5OH is ethanol, which are all different chemical compounds.

Oxalate is a polyatomic ion with the chemical formula C2O4-2, consisting of two carbon atoms and four oxygen atoms. It is commonly found in foods like spinach and rhubarb, and forms insoluble salts with various metals.

The correct chemical formula for peroxide is O2-2, indicating the presence of two oxygen atoms with a -2 charge.

Hydroxide is a polyatomic ion with a charge of -1, consisting of one oxygen atom bonded to one hydrogen atom. The correct chemical formula is OH-1.

Peroxydisulfate is a compound composed of two peroxides and one sulfur atom bonded together, resulting in the formula S2O6-2. The other options provided do not represent the correct composition of Peroxydisulfate.

Hypochlorite has the chemical formula ClO-1, which consists of one chlorine atom and one oxygen atom with a negative charge.

Selenate is an anion with the chemical formula SeO4-2, composed of selenium and oxygen atoms.

Hypophosphite has the chemical formula PH2O2-1, which consists of one phosphorus atom, two hydrogen atoms, and two oxygen atoms with a charge of -1. The incorrect options provided do not represent the correct chemical formula for hypophosphite.

Silicate is a mineral compound composed of silicon and oxygen. The correct chemical formula for silicate is SiO3-2, indicating two negative charges.

Iodate is a polyatomic ion with a charge of -1, consisting of one iodine atom and three oxygen atoms. The correct chemical formula for iodate is IO3-1. The incorrect answers provided are not the correct chemical formulas for iodate.

Metaphosphate has a chemical formula of PO3-1, which represents a polyatomic ion consisting of one phosphorus atom and three oxygen atoms.

Sulfate is a polyatomic anion composed of sulfur and oxygen atoms, with a charge of -2.

The correct chemical formula for nitrate is NO3-1, where N represents nitrogen and O represents oxygen. This ion carries a charge of -1 due to the presence of three oxygen atoms.

Sulfite ion is a polyatomic anion with the chemical formula SO3-2. It contains one sulfur atom bonded to three oxygen atoms and carries a charge of -2.