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Chem 201 Final > Final > Flashcards

Final Flashcards

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1
Q

What length wavelength indicates a higher energy electron was excited?

A

Shorter wavelength

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2
Q

What is a radial/spherical node?

A

Nodes that are spherical that electrons cannot enter

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3
Q

What type of node is spherical?

A

Radial/spherical

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4
Q

What orbital are radial nodes associated with?

A

s orbital

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5
Q

What is the equation to find the number of radial nodes?

A

n - 1 - L

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6
Q

What is an angular/planar node?

A

A single plane that electrons cannot cross

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7
Q

What type of node is a singular plane that electrons cannot cross?

A

Angular/planar

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8
Q

What is the equation to find # angular nodes?

A

L or abolsute value of m

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9
Q

What is a conical node?

A

Two cones in the d-orbital

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10
Q

What is the node that is associated with a d-orbital?

A

Conical

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11
Q

What is the equation to find # conical nodes?

A

L - |m|

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12
Q

What orbital are angular nodes associated with?

A

P-orbital

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13
Q

What is the equation for total nodes?

A

n - 1

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14
Q

What is the n quantum number mean?

A

Number of orbitals, labels them as shells

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15
Q

What does the L quantum number mean?

A

Angular momentum quantity, describes shape of orbitals

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16
Q

Equation to find L-orbital

A

N-1

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17
Q

What is the m quantum number?

A

Magnetic quantum number

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18
Q

How do you find m numbers?

A

Every value of L, + and - and zero, 2L+1

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19
Q

What is the s quantum number?

A

Spin of electron, +1/2 is spin up and -1/2 is spin down

20
Q

What quantum number do energy depend on?

A

N and L values, lower n is lower energy

21
Q

What is paramagnetic and diamagnetic?

A

Paramagnetic means unpaired electron exists

22
Q

What equation approximates the energy?

A

N+L

23
Q

Description of sigma bond (5 points)

A

S orbital, single bond, largest energy gap, no node, will switch with pi if hybridization

24
Q

Description of pi bond (5 points)

A

P orbital, double bond, second largest energy gap, one node, will switch with sigma if hybridization

25
Q

Description of delta bond (3 points)

A

D orbital, smallest energy gap, two nodes

26
Q

What is the exception for MO energy diagram?

A

Hybridization of homo nuclear molecule, sigma and pi get switched

27
Q

Which elements hybridize?

A

Elements B-N, O and F included in big molecules

28
Q

MO energy gap trends

A

Gap gets smaller across period

29
Q

How is lone pair energy order decided in MO diagram

A

Heaviest nuclei have lower energy

30
Q

What decides order of pi bonds on MO

A

Most electronegative are lower

31
Q

Hund’s rule

A

Every orbital gets one electron in a shell before doubling
Up

32
Q

Aufbau

A

Order which electrons fill shells

33
Q

Pauli-exclusion

A

2 electrons can’t have same quantum numbers associated with them

34
Q

Pauli EN scale

A

Scale that electronegativity of atoms are based on

35
Q

picometers

A

10-12

36
Q

nanometers

A

10-9

37
Q

micrometers

A

10-7

38
Q

angstrom

A

10-10

39
Q

What is the bond order equation?

A

(electrons in bonds-electrons in antibonds)/2

40
Q

What is the formal charge equation?

A

valence electrons - (#lone pairs+bonds)

41
Q

What is the correlation of bond order and strength?

A

The higher the bond order the stronger the bond

42
Q

VESPR: what is the tetrahedral bond angles?

A

109.5

43
Q

VESPR: What is the bond angles for trigonal pyramidal?

A

107

44
Q

VESPR: What are the bond angles for trigonal planar?

A

120

45
Q

VESPR: What are the bond angles for bent?

A

90<x<120

46
Q

VESPR: What is the bond angle for linear?

A

180

47
Q

Which VESPR molecular shapes have line pairs?

A

Bent, Trigonal Pryamidal

Chem 201 Final (1 decks)

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