atomic structure

Question 1

Z

Answer 1

atomic number, # protons, goes bottom left

Question 2

A

Answer 2

mass number, + protons and neutrons, goes top left

Question 3

utility of mass number

Answer 3

gives mass of atom in amu and mass of mole of atoms in grams
1 carbon = 12 amu
1 mol carbon = 12 g

Question 4

electron energy has _____ energy when further away from nucleus

Answer 4

higher

Question 5

formula for the energy of a photon/quantum

Answer 5

E = hf = hc/lamda

Question 6

formula for angular momentum of an electron

Answer 6

L = nh/2pi

Question 7

formula for energy of the electron

Answer 7

E = - RH/n^2

Question 8

energy is ______ proportional to principle quantum number

Answer 8

directly

Question 9

formula relating energy of electron to that of photon emitted when that electron goes down in energy level

Answer 9

E = hf = -RH(1/ni^2 - 1/nf^2)

Question 10

absorption spectrum looks the same as the

Answer 10

emission spectrum

Question 11

heisenberg uncertainty principle

Answer 11

can’t know position and momentum with perfect accuracy at the same time

Question 12

maximum number of electrons within a shell

Answer 12

2n^2 where n is the principle quantum number

Question 13

principle quantum number

Answer 13

n

Question 14

azimuthal quantum number

Answer 14

angular momentum, l

Question 15

possible values of l

Answer 15

0 to (n-1)

Question 16

if l = 1, what general subshell?

Answer 16

p

Question 17

if l = 0, what general subshell?

Answer 17

s

Question 18

if l = 2, what general subshell?

Answer 18

d

Question 19

if l = 3, what general subshell?

Answer 19

f

Question 20

if n=4 and l=2, what subshell are we in?

Answer 20

4d

Question 21

ml represents

Answer 21

particular orbital within subshell in which an electron is most likely to be found

Question 22

ml is the ____ quantum number

Answer 22

magnetic

Question 23

for any n, there are this many orbitals

Answer 23

n^2

Question 24

number of possible values of ml

Answer 24

2l + 1

Question 25

what the possible values of ml are

Answer 25

from -l…0…l

Question 26

aufbau principle

Answer 26

electrons fill from lower-to-higher

Question 27

hund’s

Answer 27

bus seats

Question 28

electron configuration of chromium

Answer 28

1s2 2s2 2p6 3s2 3p6 4s1 3d5

Question 29

states most stable

Answer 29

1/2 filled or completely filled

Question 30

attracted to magnetic field

Answer 30

paramagnetic

Question 31

attracted to magnetic field when

Answer 31

electrons are unpaired (electrons have no friends, so they reach out to the magnetic field)

Question 32

valence electrons of transition elements live in

Answer 32

highest s and d subshells, though their principal quantum numbers will differ

Question 33

electron configuration Hf

Answer 33

Xe4f145d26s2

Question 34

electron configuration Pm

Answer 34

Xe4f56s2

Question 35

valence electrons of transition elements of act/lan live

Answer 35

in highest s and f subshells, though their principal quantum number may be different

Question 36

violate octet rule

Answer 36

all elements in period three (starting with Na) and below, fill empty d orbitals