1. What is the A) 1s². 2s².

ground-state electronic 2p B) 1s² 2s². 2p²

configuration of a C) 1s², 2s², 2p

carbon atom? D) 1s², 2s², 2p

2. What is the ground-state electronic configuration of a fluorine atom?

A) 1s², 2s². 2p

B) 1s², 2s², 2p

C) 1s², 2s², 2p

D) 1s², 2s², 2p

3. What is the ground-state electronic configuration of a magnesium cation (Mg²*)?

A) 1s², 2s², 2p

C) 1s², 2s², 2p, 3s²

B) 1s², 2s², 2p, 3s

D) 1s², 2s², 2p, 3s2, 3p2

4. What is the ground-state electronic configuration of a chlorine anion (Cl-)?

A) 1s², 2s², 2p

C) 1s², 2s², 2p, 3s2, 3p

B) 1s², 2s², 2p, 3s2, 3p

D) Is², 2s², 2p, 3s2, 3p

5. Which of the following statements about valence electrons is true?

A) They are the most tightly held electrons.

B) They do not participate in chemical reactions.

C) They are the outermost electrons.

D) They reveal the period number of a second-row element.

6. Which of the following statements about bonding is true?

A) Covalent bonds result from the transfer of electrons from one element to another.

B) Ionic bonds result from the transfer of electrons from a metal to a non-metal.

C) Ionic bonds result from the sharing of electrons between two non-metals.

D) Covalent bonds result from the sharing of electrons between two metals.

7. Which of the following would you expect to have ionic bonds?

A) CO

B) FBr

C) NF;

D) NaCl

8. Which of the following molecules has nonpolar covalent bonds?

A) HCI

B) N2

C) CHCl3

D) NO

9. Which of the following molecules contain both covalent and ionic bonds?

NaCl

NH4OH

CH3OH

MgCO3