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MCAT > Bonding > Flashcards

Bonding Flashcards

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MCAT flashcards
1
Q

n Quantum number stands for

A

Principal quantum number

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2
Q

Principal quantum number means

A

Energy level of an e-

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3
Q

Is a smaller energy level higher or lower energy?

A

Lower

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4
Q

Is a smaller energy level closer to or further from the nucleus

A

Closer to

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5
Q

l Quantum number stands for

A

Azimuthal quantum number

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6
Q

Azimuthal quantum number means

A

Subshell (s, p, d…)

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7
Q

l=0 means

A

S e-

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8
Q

l=1

A

P e-

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9
Q

l=2

A

D e-

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10
Q

l=3

A

F e-

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11
Q

ml Quantum number means

A

Magnetic quantum number

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12
Q

Magnetic quantum number means

A

Orbital shape

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13
Q

What is the probability of an e- being at a node?

A

0%

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14
Q

ms Quantum number means

A

Spin quantum number

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15
Q

Spin quantum number means

A

Which e- in the orbital

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16
Q

Values of ms

A

+ and - 1/2

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17
Q

Values of ml

A

-l to l

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18
Q

Values of l

A

0 to n-l

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19
Q

Values of n

A

1 to infinity

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20
Q

How do molecular orbitals form?

A

When two atomic orbitals combine

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21
Q

Is a bonding or antibonding MO higher in energy?

A

Antibonding

22
Q

Is a bonding or antibonding MO higher more stable?

A

Bonding

23
Q

How does a bonding MO form?

A

Sign of the wave functions of the atomic orbitals is the same

24
Q

How does an antibonding MO form?

A

Sign of the wave functions of the atomic orbitals is different

25
Q

How many electrons form a sigma bond?

A

Two

26
Q

What bonds do single bonds contain?

A

Sigma

27
Q

What do head to head or tail to tail overlaps create?

A

Sigma bonds

28
Q

Can sigma bonds exist without pi bonds?

A

Yes

29
Q

Can pi bonds exist without sigma bonds?

A

No

30
Q

What do double bonds contain?

A

One sigma and one pi bond

31
Q

What do triple bonds contain?

A

One sigma and two pi bonds

32
Q

What causes higher order bonds to rotate less than single bonds?

A

Pi bonds

33
Q

Is a sigma or pi bond stronger?

A

Sigma

34
Q

Is a double or triple bond stronger?

A

Triple

35
Q

Is a single or double bond longer?

A

Single

36
Q

What is the relationship between bond order, length, and strength?

A

Increasing bond order is increasing strength and decreasing length

37
Q

What is hybridization?

A

Mixing of different types of orbitals

38
Q

What is s character of sp3?

A

25%

39
Q

What is s character of sp2?

A

33%

40
Q

What is s character of sp?

A

50%

41
Q

What shape does sp3 take?

A

Tetrahedron

42
Q

What are bond angles of sp3?

A

90 degrees

43
Q

What are bond angles of tetrahedron?

A

90 degrees

44
Q

What are bond angles of sp2?

A

120 degrees

45
Q

What shape does sp2 take?

A

Trigonal planar

46
Q

What are bond angles of trigonal planar?

A

120 degrees

47
Q

What are bond angles of sp?

A

180 degrees

48
Q

What are bond angles of linear?

A

180 degrees

49
Q

What shape does sp take?

A

Linear

50
Q

What orbital hybridization forms pi bonds?

A

Unhybridized p orbitals

51
Q

What is resonance delocalization of electrons?

A

Alternating single and multiple bonds with a backbone of unhybridized p orbitals which causes delocalization of pi electrons and stabilization of a molecule

52
Q

What are alternating single and multiple bonds called?

A

Conjugated pi system

MCAT (31 decks)

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