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

Which of the following ions is a polyatomic cation?

Accepted Answer

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

Question 3

What is the correct name for the compound $$\mathrm{Fe(NO_3$)_3}$$?

Accepted Answer

Iron(III) nitrate

Question 4

Which of the following compounds is molecular?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 5

What is the most stable cation formed by calcium?

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

Zinc

Question 8

What is the correct formula for the compound formed between magnesium and nitrate ions?

Accepted Answer

$$\mathrm{Mg(NO_3$)_2}$$

Question 9

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

Accepted Answer

Potassium dichromate

Question 10

Which of the following is a correct statement about ionic compounds?

Accepted Answer

They are formed by the transfer of electrons from a metal to a nonmetal.

Question 11

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

Accepted Answer

$$\mathrm{$$FePO_4$$}$$

Question 12

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

Accepted Answer

$$\mathrm{Na_2CO_3}$$

Question 13

Which of the following is a correct name-formula pair for a polyatomic ion?

Accepted Answer

Hydroxide, $$\mathrm{OH^-}$$

Question 14

Which of the following compounds is ionic?

Accepted Answer

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

Question 15

What is the correct formula for the compound formed between iron(II) and sulfide ions?

Accepted Answer

$$\mathrm{FeS}$$

Question 16

Which of the following is the correct name for $$\mathrm{$$NaHCO_3$$}$$?

Accepted Answer

Sodium hydrogen carbonate

Question 17

Which of the following is the correct formula for the compound formed between barium and sulfate ions, a compound commonly used in medical imaging?

Accepted Answer

$$\mathrm{$$BaSO_4$$}$$

Question 18

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

Accepted Answer

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

Question 19

Which of the following is the correct name for $$\mathrm{$$KClO_4$$}$$, a compound sometimes used in fireworks?

Accepted Answer

Potassium perchlorate

Question 20

Which of the following is the correct empirical formula for the compound formed between magnesium and nitrogen?

Accepted Answer

$$\mathrm{Mg_3N_2}$$

Study Guide: Main Group Ions, Transition Metals, Polyatomic Ions, and Ionic vs. Molecular Compounds

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