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Chem 113 > Final > Flashcards

Final Flashcards

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1
Q

F block

A

Lanthanoids and actinoids

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2
Q

D block

A

contiguous transition metals

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3
Q

Which is first, 4s or 3d

A

4s fills before 3d

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4
Q

Colorful hydrated ions

A

first row transition metals

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5
Q

high valent oxides

A

second and third row metals

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6
Q

Ligands

A

Lewis base / electron donors / nucleophiles

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7
Q

Monodentate Ligand

A

one donor atom

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8
Q

Coordination sphere

A

central metal ion + attached ligands

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9
Q

coordination number

A

number of donor atoms bound to central ion

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10
Q

tetrahedral

(d0 or d10), low oxidations states

A

coord number 4, weak ligands

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11
Q

square planar

(d8)

A

coord number 4, strong ligands

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12
Q

trigonal bipyramidal

A

coord number 5

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13
Q

octahedral

A

coord number 6

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14
Q

eg orbitals

A

dx2-y2, dz2
lobes pointing directly at ligand, higher energy

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15
Q

t2g orbitals

A

lower energy, lobes point between ligand point charges

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16
Q

Δoct

A

difference in energy between eg and t2g orbital levels

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17
Q

weak ligands

A

I- < Br- < Cl- < F- < H2O

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18
Q

Strong Ligands

A

C2 O42- < NH3 < ethylene Diamine < NO2- < CN-

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19
Q

High spin complexes

A

energy to pair an electron (p) is greater than delta oct, weak ligands

20
Q

Low spin complexes

A

energy to pair electron (p) is less than delta oct, strong ligands

21
Q

Paramagnetism

A

attracted to magnetic field, weak ligands result in unpaired electrons

22
Q

diamagnetism

A

weak magnetic repellance, all electrons are paired (strong ligands)

23
Q

square planar

A

always low spin, octahedral w/ infinite axial bonds

24
Q

color seen is

A

complementary to that absorbed

25
Q

strong field ligands

A

induce large splittings, absorbe high energy light (small wavelength)

26
Q

weak field ligands

A

induce small splittings, absorb low energy light (big wavelength)

27
Q

solve for delta oct

A

given wavelength of absorbance, use vλ = c to solve for v, then E=hv to solve for energy,

28
Q

lattice points

A

exist at all corners of unit cell

29
Q

unit cell

A

simplest repeating unit iterated in 3d to generate lattice

30
Q

SC unit cell

A

simple cubic: One atom at each corner

31
Q

BCC unit cell

A

Body Centered Cubic: 1atom in center, 1 at each corner

32
Q

FCC unit cell

A

Face Centerd Cubic: 1 atom at center of each face, 1 at each corner, could have 1 in middle

33
Q

Properties of SC

A

stacking pattern aaa (primitive packing), 6 nearest neighbors

34
Q

Properties of BCC

A

square packing (ababab), 8 nearest neighbors

35
Q

properties of FCC

A

closest packing (abcabc), 12 nearest neighbors

36
Q

corner atom vol contribution

A

1/8 * number of corner atoms

37
Q

Vol contribution of face atoms

A

1/2 * number of face atoms

38
Q

vol contribution of interior atom

A

1 * number of interior atoms

39
Q

How do you get the radius of a FCC lattice

A

pythagorean’s theorem

40
Q

how to find packing efficiency

A

relate cell edge length (a) to sphere radius (r), calculate volume of cube wrt a as well as the total vol of spheres filling, find ratio of vol spheres/vol cube

41
Q

metal density

A

d = mass of all atoms/ vol unit cell, get mass of metal atoms in grams, using radius find cell length to get volume

42
Q

FCC interstitial holes

A

tetrahedral and octahedral

43
Q

BCC intersitial holes

A

octahedral (bc other neighbors)

44
Q

Wide gap diffraction

A

small effect

45
Q

narrow gap diffraction

A

large effect

46
Q

diffraction

A

bending of light through small aperature

47
Q

d electron count of a complex

A

that of the central atom

Chem 113 (3 decks)

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