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CHEM 351 > Hybridized Orbitals > Flashcards

Hybridized Orbitals Flashcards

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1
Q

Which has the greatest effective electronegativity?

sp3, sp2, or sp

A

sp hybridized orbital

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2
Q

Which has the smallest effective electronegativity?

sp3, sp2, or sp

A

sp3 hybridized orbital

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3
Q

Which has the greatest C-H bond strength?

sp3, sp2, or sp

A

sp3 hybridized orbital

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4
Q

Which has the weakest C-H bond strength?

sp3, sp2, or sp

A

sp hybridized orbital

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5
Q

Which has the longest C-H bond length?

sp3, sp2, or sp

A

sp3 hybridized orbital

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6
Q

Which has the shortest C-H bond length?

sp3, sp2, or sp

A

sp hybridized orbital

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7
Q

Your electron geometry is tetrahedral. What is your hybridization?

A

sp3

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8
Q

Your electron geometry is trigonal planar. What is your hybridization?

A

sp2

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9
Q

Your electron geometry is linear. What is your hybridization?

A

sp

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10
Q

How many unhybridized p-orbitals are present in a sp3 hybrid?

A

0

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11
Q

How many unhybridized p-orbitals are present in a sp2 hybrid?

A

1

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12
Q

How many unhybridized p-orbitals are present in a sp hybrid?

A

2

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13
Q

What is σ bond?

A

Overlap between hybridized and unhybridized orbitals

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14
Q

What is a π bond?

A

Side-ways “overlap”of unhybridized p-orbitals

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15
Q

Which is stronger?

A σ bond or a π bond?

A

σ bond

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16
Q

Define constructive overlap

What does it result in?

A

Orbitals that are in phase (have the same sign) add together

Results in a bonding Molecular Orbital (σ MO)

17
Q

Define destructive overlap

What does it result in?

A

Orbitals that are out of phase (have the opposite sign) cancel out

Results in an antibonding* Molecular Orbital (σ* MO)

18
Q

Can you do a bond rotation around single bonds? Why or why not

A

Yes, this is usually permitted due to the symmetry of σ MOs.

19
Q

Can you do a bond rotation around a double bond? Why or why not?

A

No, the symmetry of the π MO restricts rotation (i.e. you will break the π bond)

CHEM 351 (14 decks)

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