Question 1

Which of the following is the correct empirical formula for the compound formed between aluminum and sulfur?

Accepted Answer

$$\mathrm{Al_2S_3}$$

Question 2

What is the most stable monoatomic cation formed by calcium?

Accepted Answer

$$\mathrm{Ca$$^{2+}$$}$$

Question 3

Which of the following is a polyatomic ion with a $$-2$$ charge?

Accepted Answer

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

Question 4

Which of the following compounds is a molecular compound?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 5

What is the correct formula for the compound formed between ammonium and sulfate ions?

Accepted Answer

$$\mathrm{(NH_4$)_2SO_4}$$

Question 6

Which of the following transition metals forms only one stable cation?

Accepted Answer

$$\mathrm{Zn}$$

Question 7

What is the empirical formula for the compound formed between magnesium and nitrogen?

Accepted Answer

$$\mathrm{Mg_3N_2}$$

Question 8

Which of the following ions has the same electron configuration as neon?

Accepted Answer

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

Question 9

Which of the following is the correct name for $$\mathrm{Cr_2O_7$$^{2-}$$}$$?

Accepted Answer

Dichromate

Question 10

A patient is given a medication containing $$\mathrm{Na_2SO_4}. $$What type of compound is this?

Accepted Answer

Ionic compound

Question 11

Which of the following is the correct formula for the compound formed between iron(III) and nitrate ions?

Accepted Answer

$$\mathrm{Fe(NO_3$)_3}$$

Question 12

Which of the following is the correct formula for the compound formed between sodium and phosphate ions?

Accepted Answer

$$\mathrm{Na_3PO_4}$$

Question 13

Which of the following is the correct formula for the compound formed between nickel(II) and chloride ions?

Accepted Answer

$$\mathrm{$$NiCl_2$$}$$

Question 14

Which of the following is a correct example of a polyatomic ion?

Accepted Answer

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

Question 15

Which of the following compounds contains both ionic and covalent bonds?

Accepted Answer

$$\mathrm{NH_4NO_3}$$

Question 16

Which of the following is the correct empirical formula for the compound formed between iron(II) and sulfide ions?

Accepted Answer

$$\mathrm{FeS}$$

Question 17

Which of the following is the correct formula for the compound formed between potassium and dichromate ions?

Accepted Answer

$$\mathrm{K_2Cr_2O_7}$$

Question 18

Which of the following is the correct name for $$\mathrm{$$HCO_3$$^-}$$?

Accepted Answer

Hydrogen carbonate (bicarbonate)

Question 19

Which of the following is the correct formula for the compound formed between aluminum and nitrate ions?

Accepted Answer

$$\mathrm{Al(NO_3$)_3}$$

Question 20

Which of the following is the correct formula for the compound formed between ammonium and phosphate ions?

Accepted Answer

$$\mathrm{(NH_4$)_3PO_4}$$

Study Guide: Ionic and Molecular Compounds, Ions, and Formulas

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