Chemistry Exam 6, 7, 8, 9

Question 1

Energy is ______ proportional to frequency and _____ proportional to wavelength

Answer 1

Directly, indirectly

Question 2

Rydberg Equation and what does it find?

Answer 2

1/wavelength = (1.096776 * 10^-7 m^-1)*(1/nfsquared - 1/n1squared)
n2 > n1

wavelength

Question 3

Uncertainty Principle

Answer 3

It is impossible to know the exact position and momentum of an electron

Question 4

Pauli Exclusion Principle

Answer 4

No two electrons in an atom can have the same 4 quantum numbers

Question 5

Energy required for transition

Answer 5

(-2.18*10^-18 J)(1/n2 - 1/n1)

Question 6

Nm in m

Answer 6

10e-9 m

Question 7

Hund’s Rule

Answer 7

Every orbital in a sublevel is singly occupied before any orbital is doubly occupied

Question 8

First Ionization

Answer 8

M(g) -> M+(g) + e- (endothermic)

Question 9

Second Ionization

Answer 9

M+ (g) -> M2+(g) + e- (endothermic)

Question 10

Electron Affinity

Answer 10

X(g) + e- -> X-(g) (exothermic)

Question 11

Lattice Energy

Answer 11

The energy required to convert one mole of an ionic solid to its ions in the gaseous phase

Question 12

Speed of Light

Answer 12

2.998 x 10^8 m/s

Question 13

To find wavelength

Answer 13

speed of light/frequency

Question 14

10^-10

Answer 14

Xray

Question 15

10^-9

Answer 15

Ultraviolet

Question 16

10^-6

Answer 16

Infrared

Question 17

10^-3

Answer 17

Microwave

Question 18

10^-2

Answer 18

Mictrowave

Question 19

1

Answer 19

T.V./Radio

Question 20

10^3

Answer 20

Radio

Question 21

Energy of a photon

Answer 21

E = hv (planks constant * frequency)

Question 22

Planks Constant

Answer 22

6.626 * 10^-34

Question 23

Lowest to Highest Electromagnetic Radiation

Answer 23

Infrared to Ultraviolet

Question 24

Wavelength =

Answer 24

Planks constant/(mass * velocity)

Question 25

Nodal Planes

Answer 25

Shape representation

Question 26

Radial nodes

Answer 26

The cool lookin rings

Question 27

The principal number for d orbitals can be larger than 3

Answer 27

True

Question 28

Lattice energy

Answer 28

The energy required to break an ionic compound into gaseous ions

Question 29

Lattice energy trends

Answer 29

Decreases with increasing ionic radius
Increases with increasing charges of ions

Question 30

As the principal number increases

Answer 30

The amount of energy required to ionize the atom decreases

Question 31

n

Answer 31

Principal Number
Energy Level

Question 32

l

Answer 32

Angular Momentum
(n-1)
Orbital Shape (Sub-level)

Question 33

m sub l

Answer 33

Magnetic
(+/- l)
Number of Orbitals

Question 34

m sub s

Answer 34

Spin
(+/- 1/2)
Spin orientation

Question 35

of e- in a shell

Answer 35

2n^2

Question 36

What is the flaw in Bohr’s model?

Answer 36

It saws that electrons move in a circular orbit around the nucleus, which is a violation of the uncertainty principle

Question 37

In an isoelectronic series,

Answer 37

As the number of protons increase, the ionic radius decreases

Question 38

Group 1 is less reactive than group 2

Answer 38

False

Question 39

A circle in a benzene structure means

Answer 39

the delocalization of pi bond over the whole molecule
resonance

Question 40

Bond Order

Answer 40

(# bonding electrons - # nonbonding electrons)/2

Question 41

Bond order = 0

Answer 41

No bonding exists as it is too unstable

Question 42

Bond order = 1

Answer 42

Single bond

Question 43

Bond order = 2

Answer 43

Double bond

Question 44

Bond order = 3

Answer 44

Triple bond

Question 45

Bond order = 1/2

Answer 45

Weak stability

Question 46

Aufbau principle

Answer 46

electrons will occupy the lowest energy orbitals first

Question 47

Hund’s rule

Answer 47

Electrons occupy degenerate orbitals 1 at a time with parallel spins before doubling up

Question 48

Pauli Exclusion Principle

Answer 48

No 2 electrons of an atom can have the same set of 4 quantum #s

Question 49

Amount of energy in a photon

Answer 49

1.885*10^-19 joules

Question 50

Bohr’s equation and what does it find?

Answer 50

-2.18*10e-18J * (1/nfinal squared - 1/ninitial squared)