Question 1

Which of the following best describes a polyatomic ion?

Accepted Answer

A group of atoms covalently bonded with an overall charge

Question 2

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

Accepted Answer

Nitrite

Question 3

Which of the following is the correct formula for thiosulfate, given that 'thio-' means replacing an oxygen with a sulfur in sulfate ($$\mathrm{SO_4$^{2-}}$$)?

Accepted Answer

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

Question 4

What is the charge on all halogen oxyanions?

Accepted Answer

$$-1$$

Question 5

Which of the following is the only major polyatomic ion with a $$+1$$ charge?

Accepted Answer

Ammonium

Question 6

What is the systematic name for $$\mathrm{CO_3$^{2-}}$$?

Accepted Answer

Carbonate

Question 7

Which of the following is the correct name for $$\mathrm{Al($$BrO_4$$)_3}$$?

Accepted Answer

Aluminum perbromate

Question 8

What is the correct formula for copper(I) nitrate?

Accepted Answer

$$\mathrm{$$CuNO_3$$}$$

Question 9

Which of the following is the correct name for $$\mathrm{K_2Cr_2O_7 \cdot 3H_2O}$$?

Accepted Answer

Potassium dichromate trihydrate

Question 10

What is the correct formula for calcium selenide hexahydrate?

Accepted Answer

$$\mathrm{CaSe \cdot 6H_2O}$$

Question 11

Which of the following is the correct name for $$\mathrm{H_2S} as an $$acid?

Accepted Answer

Hydrosulfuric acid

Question 12

What is the correct formula for hypobromous acid?

Accepted Answer

$$\mathrm{HBrO}$$

Question 13

Which of the following is the correct name for $$\mathrm{$$SeF_6$$}$$?

Accepted Answer

Selenium hexafluoride

Question 14

What is the correct name for $$\mathrm{N_2S_4}$$?

Accepted Answer

Dinitrogen tetrasulfide

Question 15

Which of the following is the correct formula for acetic acid?

Accepted Answer

$$\mathrm{HC_2H_3O_2}$$

Question 16

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

Accepted Answer

Iodate

Question 17

What is the correct formula for sodium dichromate?

Accepted Answer

$$\mathrm{Na_2Cr_2O_7}$$

Question 18

Which of the following is the correct name for $$\mathrm{$$CoCO_3$$}$$?

Accepted Answer

Cobalt(II) carbonate

Question 19

Which of the following is the correct formula for magnesium sulfate?

Accepted Answer

$$\mathrm{$$MgSO_4$$}$$

Question 20

Which of the following is the correct name for $$\mathrm{$$CaCl_2$$}$$?

Accepted Answer

Calcium chloride

Molecules and Compounds: Polyatomic Ions and Compound Nomenclature

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