Chem Exam 1 (9/17)

Question 1

What shape are S orbitals? ,

Answer 1

spherical (radius increases with n)

Question 2

When n is greater than or = to 2 s orbitals have ____________. Formula is _________

Answer 2

radial nodes, n-l-1

Question 3

What shape are P orbitals?.

Answer 3

2 lobes with an angular node between them

Question 4

What is the l value of a P orbital?

Answer 4

1

Question 5

What is the formula for total nodes of a p orbital?

Answer 5

n-1

Question 6

ml labels are _________

Answer 6

random

Question 7

What shape are d orbitals?

Answer 7

4 lobes, or a p orbital with a doughnut

Question 8

What is the l value for d orbitals?

Answer 8

2

Question 9

How many angular nodes do all d orbitals have?

Answer 9

2

Question 10

What shape are f orbitals?

Answer 10

8 lobes

Question 11

What’s the l value for f orbitals?

Answer 11

3

Question 12

How many angular nodes do f orbitals have?

Answer 12

3

Question 13

Spin describes ___________, which affects _________.

Answer 13

magnetic field, energy

Question 14

All e- have same amount of _____, but don’t have the same ________ in the same ________

Answer 14

spin, energy, orbital

Question 15

Principle (n)-

Answer 15

1-7, describes distance from nucleus

Question 16

Angular momentum (l) range

Answer 16

0-n-1

Question 17

Magnetic quantum number range and formula for number of values,

Answer 17

-l to l, formula 2l+1

Question 18

Spin quantum- ms. can only be ________, which is determined by the

Answer 18

+/- 1/2, (Direction of e- spin)

Question 19

Orbital diagram- 1 box per _____________ each holds _______

Answer 19

orbital (1s, 2s, 2-, etc), 2 e-

Question 20

What does l describe?

Answer 20

shape of orbital (n-1) times 4

Question 21

How do you calculate the total number of nodes in a p orbital?

Answer 21

N-1

Question 22

What does the magnetic quantum number tell you?

Answer 22

(3D orientation of orbital)

Question 23

Pauli exclusion principle-

Answer 23

no 2 e- will have all 4 same quantum numbers (e- must have opposite spins)

Question 24

Same energy level

Answer 24

degenerate

Question 25

As # of e- increases, so does __________

Answer 25

repulsion

Question 26

In a many electron atom, e- are both attracted to the ________ and repelled by ____________ in atom

Answer 26

nucleus, each other

Question 27

Effective nuclear charge is a net charge attracting _____ to __________

Answer 27

e-. nucleus

Question 28

What is the formula for effective nuclear charge? What do the variables mean?

Answer 28

(Zeff=Z-S) Z= atomic # S= # of e-

Question 29

The ________ e- are shielded by the ____________ e-

Answer 29

outer, inner

Question 30

Aufbau principle-

Answer 30

Lowest orbitals filled first

Question 31

Hund's rule

Answer 31

Ground state e- configuration results in max e- spin

Question 32

e-/e- shielding comes from __________ and ___________ the atom

Answer 32

repusion, destabilizes

Question 33

Why doesn't the nucleus fall apart from e- repulsion?

Answer 33

The core e- shield VEs from full nuclear charge

Question 34

What directions lead to largest atomic radii? Why?

Answer 34

Bottom left,

Question 35

What directions lead to highest first ionization energy? Why?

Answer 35

Top right,

Question 36

What directions lead to highest e- affinity? Why?

Answer 36

Left, top or bottom isn't consistent

Question 37

What directions lead to highest metallic character? Why?

Answer 37

Bottom left,

Question 38

What are the 2 exceptions to the first IEs?

Answer 38

Between groups II and 3 where e- is removed from p orbital And 6A because paired e- results in repulsion, which makes it easier to remove (3 happy scenarios)

Question 39

Order these by decreasing size (All are isolelectronic): K+, Cl-, Ca2+, S2-

Answer 39

S2-, Cl-, K+, Ca2+

Question 40

Does bigger mass= bigger atom?

Answer 40

No

Question 41

What do all atoms want to be like?

Answer 41

Noble gas

Question 42

How do you find the n value for s?

Answer 42

n

Question 43

How do you find the n value for d?

Answer 43

n-1

Question 44

How do you find the n value for p?

Answer 44

n

Question 45

How do you find the n value for f?

Answer 45

n-2

Question 46

What does a pseudo noble gas configuration have?

Answer 46

18 e-

Question 47

What does isolelectronic mean?

Answer 47

ions with same e- configuration

Question 48

What is the mass of an e-?

Answer 48

9.11 x 10^-28