9a. How many pi bonds are present in the following compound? H :0: H. H H H H A. В. C. one two three four five D. Е. 9b. Which is the shortest bond in the following compound? H-C= -CEC-C-H II I IV A. В. C. II D. IV

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Chapter9: Covalent Bonding: Orbitals
Section: Chapter Questions
Problem 3ALQ: Compare Figs. 4-47 and 4-49. Why are they different? Because B2 is known to be paramagnetic, the 2p...
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9a. How many pi bonds are present in the following compound?
H
:0:
H.
нн
нн
А.
one
В.
C.
D.
two
three
four
five
E.
9b. Which is the shortest bond in the following compound?
H
H-C=C-C=C,C-H
H.
II II IV
IV
A.
В.
С.
D.
II
II
IV
==-
Transcribed Image Text:9a. How many pi bonds are present in the following compound? H :0: H. нн нн А. one В. C. D. two three four five E. 9b. Which is the shortest bond in the following compound? H H-C=C-C=C,C-H H. II II IV IV A. В. С. D. II II IV ==-
12а.
What is the correct structure for 3-ethyl-1-iodocyclohexane?
А.
В.
C.
D.
IV
12b.
Is the following alkene cis, trans, or neither?
OMe
А.
В.
trans
cis
C.
neither
Which of the following is a chair conformation of cyclohexane?
12c.
IV
A.
В.
C.
II
D.
IV
-==2
Transcribed Image Text:12а. What is the correct structure for 3-ethyl-1-iodocyclohexane? А. В. C. D. IV 12b. Is the following alkene cis, trans, or neither? OMe А. В. trans cis C. neither Which of the following is a chair conformation of cyclohexane? 12c. IV A. В. C. II D. IV -==2
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