Question 1

Which of the following is the correct formula for the thiosulfate ion, given that 'thio-' indicates the replacement of one oxygen atom by a sulfur atom in the sulfate ion?

Accepted Answer

$$\mathrm{S_2O_3$$^{2-}$$}$$

Question 2

What is the systematic name for the polyatomic ion $$\mathrm{NO_2$^-}$$?

Accepted Answer

Nitrite

Question 3

Which of the following ions is a tetraoxide?

Accepted Answer

$$\mathrm{SO_4$^{2-}}$$

Question 4

If the base name for the halogen oxyanion is 'chlor', what is the formula for the perchlorate ion?

Accepted Answer

$$\mathrm{$$ClO_4$$^-}$$

Question 5

Which of the following is the correct formula for the chromate ion?

Accepted Answer

$$\mathrm{$$CrO_4$$^{2-}}$$

Question 6

What is the charge on the carbonate ion?

Accepted Answer

$$2-$$

Question 7

Which of the following ions is derived by replacing one oxygen atom in the carbonate ion with a sulfur atom?

Accepted Answer

$$\mathrm{$$SCO_2$$^{2-}}$$

Question 8

Which of the following is the correct systematic name for $$\mathrm{IO_3$^-}$$?

Accepted Answer

Iodate

Question 9

What is the formula for the acetate ion?

Accepted Answer

$$\mathrm{C_2H_3O_2^-}$$

Question 10

Which of the following ions is the silicon version of the carbonate ion?

Accepted Answer

$$\mathrm{$$SiO_3$$^{2-}}$$

Question 11

Which of the following is the correct formula for the permanganate ion?

Accepted Answer

$$\mathrm{$$MnO_4$$^-}$$

Question 12

Which of the following ions is a polyatomic cation?

Accepted Answer

Ammonium $$\mathrm{NH_4$^+}$$

Question 13

What is the systematic name for $$\mathrm{CO_2$^{2-}}$$?

Accepted Answer

Carbonite

Question 14

Which of the following ions is NOT a trioxide?

Accepted Answer

$$\mathrm{SO_4$^{2-}}$$

Question 15

Which of the following is the correct formula for the cyanide ion?

Accepted Answer

$$\mathrm{CN^-}$$

Question 16

Which of the following ions has a $$1-$$ charge and contains three oxygen atoms?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 17

What is the formula for the hypobromite ion?

Accepted Answer

$$\mathrm{BrO^-}$$

Question 18

Which of the following ions is the conjugate base of acetic acid?

Accepted Answer

$$\mathrm{C_2H_3O_2^-}$$

Question 19

Which of the following ions is derived from the element phosphorus and contains four oxygen atoms?

Accepted Answer

$$\mathrm{PO_4$^{3-}}$$

Question 20

Which of the following is the correct formula for the perchlorate ion?

Accepted Answer

$$\mathrm{$$ClO_4$$^-}$$

Polyatomic Ions and Oxyanions: Structure, Naming, and Patterns

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