1. Basic Concepts of Chemical Bonding
Chemistry, The Central Science, 11th edition Theodore L. Brown, H. Eugene LeMay, Jr., Bruce E. Bursten, and Catherine J. Murphy
Chapter 8
Basic Concepts of Chemical Bonding
Dana & Michelle Chatellier
University of Delaware
© Copyright 2009, Pearson Education

2. The two types of chemical bonds commonly found in compounds are:
doric and covalent.
ionic and electrolytic.
ionic and covalent.
electrolytic and compound.

3. The two types of chemical bonds commonly found in compounds are:
doric and covalent.
ionic and electrolytic.
ionic and covalent.
electrolytic and compound.

4. The electrons used by atoms to form chemical bonds are the:
core electrons.
valence electrons.
lone pair electrons.
unpaired electrons.

5. The electrons used by atoms to form chemical bonds are the:
core electrons.
valence electrons.
lone pair electrons.
unpaired electrons.

6. “Atoms tend to gain, lose, or share electrons until they are surrounded by eight valence electrons” is a statement of:
the rule of octaves.
the double quartet rule.
the eight electron rule.
the octet rule.

7. “Atoms tend to gain, lose, or share electrons until they are surrounded by eight valence electrons” is a statement of:
the rule of octaves.
the double quartet rule.
the eight electron rule.
the octet rule.

8. When a transition metal atom becomes a +1 ion, the electron lost usually comes from what type of orbital? p f d s

9. When a transition metal atom becomes a +1 ion, the electron lost usually comes from what type of orbital? p f d s

10. A molecule of CS2 contains:
two single bonds.
two double bonds.
one single bond and one double bond.
one single bond and one triple bond.

11. A molecule of CS2 contains:
two single bonds.
two double bonds.
one single bond and one double bond.
one single bond and one triple bond.

12. What is the formal charge on the nitrogen atom in the nitrate ion (NO3–1) ?+2 +1 –1

13. What is the formal charge on the nitrogen atom in the nitrate ion (NO3–1) ?+2 +1 –1

14. The formate ion is HCO2–1. The charges on the oxygen atoms in the formate ion are best described as:
–1 on both atoms.
0 on both atoms.
–1 on one atom, 0 on the other atom.
–1/2 on both atoms.

15. The formate ion is HCO2–1. The charges on the oxygen atoms in the formate ion are best described as:
–1 on both atoms.
0 on both atoms.
–1 on one atom, 0 on the other atom.
–1/2 on both atoms.

16. Which compound below contains an atom that is surrounded by more than an octet of electrons?
PF5
CH4
NBr3
OF2

17. Which compound below contains an atom that is surrounded by more than an octet of electrons?
PF5
CH4
NBr3
OF2

18. Which choice below correctly lists the elements in order of increasing electronegativity?
C < N < O < F
N < C < O < F
N < C < F < O
C < N < F < O

19. Which choice below correctly lists the elements in order of increasing electronegativity?
C < N < O < F
N < C < O < F
N < C < F < O
C < N < F < O

20. As the number of bonds between two atoms increases, the distance between the atoms:
decreases.
remains unchanged.
varies with the atoms involved.

21. As the number of bonds between two atoms increases, the distance between the atoms:
decreases.
remains unchanged.
varies with the atoms involved.