Exam 3 Material (Periodic Table, AXE...)

Question 1

Lattice Energy (U)

Answer 1

relates to strength of an ionic bond

energy required to decompose 1 MOL of solid ionic compound

Question 2

Bond Energy

Answer 2

D(X-Y)= ΔHO/n

Question 3

Energy for a Hydrogen atom

Answer 3

En= -RH/n^2 
RH= a constant

Question 4

ΔE for an e- transition

Answer 4

ΔE= RH (1/ni^2- 1/nf^2)

Question 5

Ephoton equation

Answer 5

Ephoton = hν
h = planck's constant 
ν= frequency

Question 6

e- configuration for Cr

Answer 6

[Ar]4s15d5

Question 7

paramagnetic

Answer 7

having one or more unpaired e-

Question 8

diamagnetic

Answer 8

no unpaired e-

Question 9

Z*

Answer 9

for any atom

Question 10

Z*

Answer 10

nuclear charge felt by an e- in a polyelectron atom

Question 11

Where do giant changes in IE occur?

Answer 11

when there is a change in n value of the removed electrons

Question 12

IE1

Answer 12

successive IE, for any atom, ALWAYs increase

Question 13

atomic size (r) is proportional to…

Answer 13

n^2/Z*

Question 14

trends in Z*

Answer 14

across the table: increase

down the table: constant

Question 15

Trends in IE1

Answer 15

across: increase
down: decrease

Question 16

l= 4 what subshell?

Answer 16

g

Question 17

l= 3, what subshell?

Answer 17

f

Question 18

l= 2, what subshell?

Answer 18

d

Question 19

l= 1, what sub shell?

Answer 19

p

Question 20

l= 0, what subshell?

Answer 20

s

Question 21

when an e- goes up in energy levels

Answer 21

energy is absorbed

Question 22

when an e- drops down in energy levels

Answer 22

energy is emitted

Question 23

RH (rydberg’s constant)

Answer 23

2.18 x 10^-18

Question 24

planck’s constant (H)

Answer 24

6.63 x 10^-34

Question 25

Most electronegative atom

Answer 25

F

Question 26

velocity of light (c)

Answer 26

3.00 x 10^8 m/sec

Question 27

wavelength equation

Answer 27

λ= c/v

Question 28

total number of orbitals in a shell?

Answer 28

n^2

Question 29

number of orbitals in a subshell?

Answer 29

(2l +1) (the odd numbers)

Question 30

l relates to..

Answer 30

shape of an orbital

Question 31

n relates to..

Answer 31

energy and size of an orbital

Question 32

ml relates to...

Answer 32

the orientation in space of an orbital

Question 33

ms

Answer 33

the spin of an orbital, + or - 1/2

Question 34

Hund's rule

Answer 34

e- in a subshell remain unpaired in separate orbitals with their spins aligned until forced to pair up

Question 35

trends in r (atomic size)

Answer 35

across: decrease down: increase

Question 36

pauli exclusion principle

Answer 36

2e- maximum per orbital

Question 37

terminal atoms

Answer 37

the atoms attached to the central atom

Question 38

central atom

Answer 38

the atom to which all other atoms are bonded to

Question 39

exception to the octet rule (more than an octet)

Answer 39

this can occur in elements that are in row 3 or higher

Question 40

electronegativity

Answer 40

ability of an atom, in a molecule, to attract e- to itself

Question 41

pauling scale

Answer 41

a scale of electronegativity, 0-4 (4 being the most electronegative)

Question 42

AXmEn

Answer 42

``` A= central atom X= terminal atom m number of terminal atoms E= lone pairs on A n=no. of lone pairs ```

Question 43

EPA

Answer 43

electron pair arrangement (m+n)

Question 44

MG

Answer 44

molecular geometry, the arrangement of ATOMS (m) if n=0 then EPA and MG will match if n does not = 0 then EPA and MG will not match

Question 45

Bond order

Answer 45

No. of X-Y bonds/No. of X-Y atom pairs

Question 46

Bond Length

Answer 46

as x-y bond order increases, the bond length decreases

Question 47

least electronegative elements

Answer 47

group 1A and 2A

Question 48

exceptions to octet rule (less than octet)

Answer 48

if the central atom is from group 1A-3A there will not be an octet (not enough e-)

Question 49

Bond polarity

Answer 49

measure of how equally the bond e- pair is shared by 2 atoms in the bond **relates to ΔX

Question 50

Polar Ionic Bonds

Answer 50

ΔX is large ex. LiF

Question 51

NonPolar covalent bond

Answer 51

ΔX= 0 when X=Y in an X-Y pair

Question 52

polar covalent bond

Answer 52

ΔX is small X does not equal Y

Question 53

ΔX

Answer 53

ΔX = | X(x)- X(y)|

Question 54

trends in X

Answer 54

across: X increases down: X decreases

Question 55

Isolectronic

Answer 55

ions with same e- configuration

Question 56

relationship for U and bond strength

Answer 56

The higher U is the stronger the ionic bond

Question 57

e- configuration for Cu

Answer 57

[Ar]4s13d10

Question 58

in subshell s, how many e-

Answer 58

2e-

Question 59

in subshell p, how many e-

Answer 59

6e-

Question 60

in subshell d, how many e-

Answer 60

10e-

Question 61

in subshell f, how many e-

Answer 61

14e-

Question 62

AX3E2

Answer 62

EPA: trigonal bipyramidal MG: T-shaped

Question 63

AX2E3

Answer 63

EPA: trigonal bipyramidal MG: linear

Question 64

AX4E

Answer 64

EPA: trigonal bipyramidal MG: see-saw

Question 65

angle on tetrahedral

Answer 65

109.5

Question 66

angle on trigonal bipyramidal

Answer 66

``` axis-axis= 180 axis-equatorial = 90 equatorial-equatorial = 120 ```

Question 67

Trigonal Planar, EPA, angle

Answer 67

``` EPA= 3 angle= 120 ```

Question 68

linear, EPA, angle

Answer 68

``` EPA= 2 angle= 180 ```

Question 69

octahedral, EPA, angle

Answer 69

``` EPA= 6 angle= 90 ```