Cba 1

1. What is the ground-state electronic configuration of a carbon atom?

• A) 1s2, 2s2, 2p5

• B) 1s2, 2s2, 2p2

• C) 1s2, 2s2, 2p6

• D) 1s2, 2s2, 2p4

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

• A) 1s2, 2s2, 2p2

• B) 1s2, 2s2, 2p3

• C) 1s2, 2s2, 2p4

• D) 1s2, 2s2, 2p

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

• A) 1s2, 2s2, 2p6

• B) 1s2, 2s2, 2p6, 3s1

• C) 1s2, 2s2, 2p6, 3s2

• D) 1s2, 2s2, 2p6, 3s2, 3p2

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

• A) 1s2, 2s2, 2p6

• B) 1s2, 2s2, 2p6, 3s2, 3p6

• C) 1s2, 2s2, 2p6, 3s2, 3p5

• D) 1s2, 2s2, 2p6, 3s2, 3p4

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) NF3

• D) NaCl

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

• A) HCl

• B) N2

• C) CHCl3

• D) NO

• A) I, II

• B) I, IV

• C) II, III

• D) II, IV

• A) I > II > III > IV

• B) IV > II > I > III

• C) IV > III > II > I

• D) IV > II > III > I