Cholesterol .....structure questions...

please view the attachment...of diagram of cholesterol

I. Which of the following groups of atoms lie in a common plane? (enter the letter label(s), unspaced--there may be more than one correct):
A. 5,6,7,10  B. 1,2,3,4,5,10  C. 7,8,9,10,11  D. 24,25,26,27

II. What is the hybridization of atom number 27? (enter the letter label from the list):
    A.  sp    B.  sp2    C.  sp3    D.  dsp3

III. How many pi-bonds are there in the structure?
IV. How many methyl (CH3) groups are there in the structure?
V. How many lone pairs are there in the structure?

Attached file(s):

cholesterol.doc  View File