Question Bank in line with Organic Chemistry,McMurry ,8e

Chapter 1—Structure and Bonding




SHORT ANSWER



1. Give the ground-state electron configuration for carbon (atomic number 6).


ANS:

1s22s22px12py1 or 1s22s22p2



2. Give the ground-state electron configuration for fluorine (atomic number 9).


ANS:

1s22s22px2 2py2 2pz1 or 1s22s22p5




3. Give the ground-state electron configuration for magnesium (atomic number 12).


ANS:

1s22s22p63s2




4. How many electrons does silicon have in its valence shell?


ANS:

four

,Exhibit 1-1

Write valid Lewis (electron-dot) structures for each formula below. Show all electrons as
dots and show all non-bonding electrons.



5. C2Cl4 tetrachloroethylene


ANS:




6. CO2 carbon dioxide


ANS:




7. CH4O methanol


ANS:




Exhibit 1-2

Consider the structure of urea, shown below, to answer the following question(s).

,8. Refer to Exhibit 1-2. Fill in any non-bonding valence electrons that are missing from
the line-bond structure.


ANS:




9. Refer to Exhibit 1-2. The carbon atom in urea is:



a. sp3 hybridized

b. sp2 hybridized

c. sp hybridized

d. not hybridized



ANS:

b




10. Refer to Exhibit 1-2. The predicted NH2−C=O bond angle in urea is:



a. 109.5

b. 120

c. 180

, d. not predictable



ANS:

b