MCAT Organic Chemistry Review 2018-2019

(A)  I  only

(B)  II only

(C)  I  and III only

(D)  II and III only

12 .    The p   character   of  the bonds   formed  by  the carbon  atom    in  HCN is:

(A)  25%.

(B)  50%.

(C)  67%.

(D)  75%.

13 .    A   resonance   structure   describes:

I. the hybrid of all possible structures that contribute to electron distribution.
II. a potential arrangement of electrons in a molecule.
III. the single form that the molecule most often takes.

(A)  I  only

(B)  II only

(C)  I  and II  only

(D)  I, II, and III

14 .    An  electron    is  known   to  be  in  the n   =   4   shell   and the l   =   2   subshell.   How many    possible

combinations    of  quantum numbers could   this    electron    have?

(A)  1

(B)  2

(C)  5

(D)  10

15 .    Compared    to  single  bonds,  triple  bonds   are: