Final

Question 1

F block

Answer 1

Lanthanoids and actinoids

Question 2

D block

Answer 2

contiguous transition metals

Question 3

Which is first, 4s or 3d

Answer 3

4s fills before 3d

Question 4

Colorful hydrated ions

Answer 4

first row transition metals

Question 5

high valent oxides

Answer 5

second and third row metals

Question 6

Ligands

Answer 6

Lewis base / electron donors / nucleophiles

Question 7

Monodentate Ligand

Answer 7

one donor atom

Question 8

Coordination sphere

Answer 8

central metal ion + attached ligands

Question 9

coordination number

Answer 9

number of donor atoms bound to central ion

Question 10

tetrahedral

(d0 or d10), low oxidations states

Answer 10

coord number 4, weak ligands

Question 11

square planar

(d8)

Answer 11

coord number 4, strong ligands

Question 12

trigonal bipyramidal

Answer 12

coord number 5

Question 13

octahedral

Answer 13

coord number 6

Question 14

e_g orbitals

Answer 14

d_x²-y², d_z²
lobes pointing directly at ligand, higher energy

Question 15

t_2g orbitals

Answer 15

lower energy, lobes point between ligand point charges

Question 16

Δ_oct

Answer 16

difference in energy between e_g and t_2g orbital levels

Question 17

weak ligands

Answer 17

I^- < Br^- < Cl^- < F^- < H₂O

Question 18

Strong Ligands

Answer 18

C₂ O₄^2- < NH₃ < ethylene Diamine < NO₂^- < CN^-

Question 19

High spin complexes

Answer 19

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

Question 20

Low spin complexes

Answer 20

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

Question 21

Paramagnetism

Answer 21

attracted to magnetic field, weak ligands result in unpaired electrons

Question 22

diamagnetism

Answer 22

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

Question 23

square planar

Answer 23

always low spin, octahedral w/ infinite axial bonds

Question 24

color seen is

Answer 24

complementary to that absorbed

Question 25

strong field ligands

Answer 25

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

Question 26

weak field ligands

Answer 26

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

Question 27

solve for delta oct

Answer 27

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

Question 28

lattice points

Answer 28

exist at all corners of unit cell

Question 29

unit cell

Answer 29

simplest repeating unit iterated in 3d to generate lattice

Question 30

SC unit cell

Answer 30

simple cubic: One atom at each corner

Question 31

BCC unit cell

Answer 31

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

Question 32

FCC unit cell

Answer 32

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

Question 33

Properties of SC

Answer 33

stacking pattern aaa (primitive packing), 6 nearest neighbors

Question 34

Properties of BCC

Answer 34

square packing (ababab), 8 nearest neighbors

Question 35

properties of FCC

Answer 35

closest packing (abcabc), 12 nearest neighbors

Question 36

corner atom vol contribution

Answer 36

1/8 * number of corner atoms

Question 37

Vol contribution of face atoms

Answer 37

1/2 * number of face atoms

Question 38

vol contribution of interior atom

Answer 38

1 * number of interior atoms

Question 39

How do you get the radius of a FCC lattice

Answer 39

pythagorean's theorem

Question 40

how to find packing efficiency

Answer 40

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

Question 41

metal density

Answer 41

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

Question 42

FCC interstitial holes

Answer 42

tetrahedral and octahedral

Question 43

BCC intersitial holes

Answer 43

octahedral (bc other neighbors)

Question 44

Wide gap diffraction

Answer 44

small effect

Question 45

narrow gap diffraction

Answer 45

large effect

Question 46

diffraction

Answer 46

bending of light through small aperature

Question 47

d electron count of a complex

Answer 47

that of the central atom