Polyatomic Ions

Flashcards covering the names and chemical formulas of common polyatomic ions organized by charge.

What is the chemical formula for the hydronium ion?

$$H_3O^+$$

What is the chemical formula for the ammonium ion?

$$NH_4^+$$

What is the chemical formula for the acetate ion?

$$C_2H_3O_2^-$$

What is the chemical formula for the nitrate ion?

$$NO_3^-$$

What is the chemical formula for the iodate ion?

$$IO_3^-$$

What is the chemical formula for the chlorate ion?

$$ClO_3^-$$

What is the chemical formula for the bromate ion?

$$BrO_3^-$$

What is the chemical formula for the manganate ion?

$$MnO_3^-$$

What is the chemical formula for the cyanide ion?

$$CN^-$$

What is the chemical formula for the hydroxide ion?

$$OH^-$$

What is the chemical formula for the carbonate ion?

$$CO_3^{2-}$$

What is the chemical formula for the sulfate ion?

$$SO_4^{2-}$$

What is the chemical formula for the oxalate ion?

$$C_2O_4^{2-}$$

What is the chemical formula for the chromate ion?

$$CrO_4^{2-}$$

What is the chemical formula for the dichromate ion?

$$Cr_2O_7^{2-}$$

What is the chemical formula for the peroxide ion?

$$O_2^{2-}$$

What is the chemical formula for the phosphate ion?

$$PO_4^{3-}$$

What is the chemical formula for the arsenate ion?

$$AsO_4^{3-}$$