1. Week 12 1. An ionic bond results from _________ electrons, while a covalent bond is a result of ______ electrons. A.shared, transferredC. outer, inner B.transferred, sharedD. inner, outer 2. Which pair of elements will likely form an ionic bond? A.K and HC. K and Cl B.N and CD. C and H

2. 3. How many atoms of oxygen are present in one molecule of H 2 SO 4 ? A.1C. 4 B.2D. 8 4. Which pair of elements has the most physical and chemical properties in common? a. Ge and Se b. K and Kr c. Al and Ga d. Ba and Bi

3. 5. Silver is a transition metal that carries a charge of +1 as an ion. Bromine is a halogen that produces an ion with a -1 charge. Which of the following chemical formulas correctly represents 2 molecules of silver bromide? A.2AgBrC. Ag 2 Br 2 B.Ag(Br) 2 D. 2Ag 2 Br 2 6. What is the chemical formula stable ionic compound formed between magnesium and nitrogen? A.MgNC. Mg 3 N 2 B.Mg 2 N 3 D. MgN 2

4. 7. The compound formed from the elements calcium and chlorine is known as A.Chlorine calcideC. Calcium chloride B.Calcium dichlorideD. Calcium chlorate 8. What is the correct formula for the compound lithium oxide? a.LiO b.Li 2 O c.LiO 2 d.Li 2 O 2

5. 9. When barium metal reacts with chlorine gas it forms an ionic compound. What is the chemical formula for barium chloride? a.BaCl b.Ba 2 Cl c.Ba 2 Cl 2 d.BaCl 2

6. 10. Magnesium loses two electrons to form magnesium ions. Chlorine gains one electron to form chloride ions. Select the correct formula for magnesium chloride. A.MgCl B.Mg 2 Cl C.MgCl 2 D.Mg 2 Cl 2