Question

Organic Chemistry:

Vocabulary:

I.)

Pi bonds are the ____ bond between two atoms.

a. 1st

b. 2nd only

c. 3rd only

d. 1st or 2nd

e. 2nd or 3rd

f. 1st, 2nd, or 3rd

Pi bonds hold electrons ___ two atoms.

a. directly between

b. above and below

c. in front and behind

d. directly between OR above and below

e. above and below OR in front and behind

f. any of these

Pi bonds can be made with overlap of ___ orbitals.

a. s

b. p

c. sp

d. sp2

e. sp3

f. any of these

Pi bonds ___ rotate and are ___ than a sigma bond.

a. can, stronger

b. can, weaker

c. can, the same strength as

d. cannot, stronger

e. cannot, weaker

f. cannot, the same strength as

_________________________________________________________________________

A reaction that forms a particular stereoisomer is __________.

A reaction that is ______________ forms a particular constitutional isomer.

_________________________________________________________________________

Propagation steps start with ________ radicals

Propagation steps are _ exothermic as individual steps.

a. always

b. sometimes

c. never

Propagation steps happen ____ than termination steps.

a. much more often

b. much less often

c. at about the same rate as

________________________________________________________________________

Answer 1

1) option E, 2nd and 3rd bonds are pi bonds.

2) option B

3) option B ,pi bonds are formed by overlapping of pure p and d orbitals.

4) option E

5) stereoselective , regioselective

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