CP Chem: Bonding and Molecular Geometry Review 2015
Short answer:
1. How is a cation formed? What is its charge?
2. How is an anion formed? What is its charge?
3. What type of elements gain electrons?
4. What type of elements lose electrons?
5. Why does an atom gain or lose electrons?
6. If an atom has5 or more electrons in its valence energy level, how will it react?
7. What is an ionic bond and how does it form?
8. What are 3 properties of an ionic bond?
9. What is a covalent bond and how does it form?
10. What are the 2 types of covalent bonds and describe.
11. What are 3 properties of a covalent bond?
12. If a solution conducts electricity, what does that mean on the molecular level?
13. Do covalent or ionic compounds conduct electricity- in the solid state, liquid state, and/or
dissolved in water? Explain.
14. When considering electronegativity- what are the ranges that determine the different
types of bonds?
15. If a covalent bond is polar, which element is more electronegative?
MULTIPLE CHOICE:
1. In a chemical bond, the link between atoms results from the attraction between electrons and
(a) Lewis structures; (b) nuclei; (c) van der Waals forces; (d) isotopes
2. A covalent bond consists of
(a) shared electron; (b) a shared electron pair; (c) two electrovalent electrons;
(d) an octet of electrons
3. If two covalently bonded atoms are identical, the bond is identified as
(a) nonpolar covalent; (b) polar covalent; (c) nonionic; (d) coordinate covalent
4. A covalent bond in which there is unequal attraction for the shared electrons is
(a) nonpolar; (b) polar; (c) ionic; (d) dipolar
5. Atoms with a strong attraction for electrons they share with another atom exhibit (a) zero
electronegativity; (b) low electronegativity; (c) high electronegativity; (d) Lewis
electronegativity.
6. Bonds with between 5% and 50% ionic character are considered to be
(a) ionic; (b) pure covalent; (c) polar covalent; (d) nonpolar covalent.
7. A nonpolar covalent bond is likely to exist between
(a) a metal and a nonmetal; (b) two ions; (c) two identical atoms; (d) an atom and an ion.
8. The greater the electronegativity difference between two bonded atoms, the greater the
percentage of
(a) ionic character; (b) metallic character; (c) covalent character; (d) electron sharing.
9. In which of these compounds is the bond between the atoms NOT a nonpolar bond? (a) Cl2; (b)
H2; (c) HCl; (d) O2.
DIRECTIONS: Complete the following statements, forming accurate sentences.
10. The electrons involved in the formation of a chemical bond are called
____________________________________
11. A chemical bond resulting from electrostatic attraction between positive and negative
ions is called a(n)
_______________________________________________________________________
12. If the electrons involved in bonding spend most of the time close to one atom rather than
the other, the bond is
_______________________________________________________________________________
13. What is the difference between VSEPR theory and Valence Bond Theory?
14. AB has what type of geometry, angle, and hybridization? Draw a picture.
15. AB2 has what type of geometry, angle, and hybridization? Draw a picture.
16. AB3 has what type of geometry, angle, and hybridization? Draw a picture.
17. AB2E has what type of geometry, angle, and hybridization? Draw a picture.
18. AB4 has what type of geometry, angle, and hybridization? Draw a picture.
19. AB3E has what type of geometry, angle, and hybridization? Draw a picture.
20. AB2E2 has what type of geometry, angle, and hybridization? Draw a picture.
Draw the LDS for the following molecules/ions.
Identify the AB form, bond angle, molecule polarity, shape, # sigma/pi bonds
NO3C2H4
H2S
BI3
PF3