ch. 4 retake study guide

Question 1

what orbital does l=0 represent?

Answer 1

s orbital

Question 2

what orbital does l=1 represent?

Answer 2

p orbital

Question 3

what orbital does l=2 represent?

Answer 3

d orbital

Question 4

what orbital does l=3 represent?

Answer 4

f orbital

Question 5

when n=1…

Answer 5

l = 0

m sub l = 0

Question 6

when n=2…

Answer 6

l = 0, 1
m sub l =
0
-1, 0, 1

Question 7

when n=3…

Answer 7

l = 0, 1, 2
m sub l =
0
-2, -1, 0, 1, 2

Question 8

when n=4…

Answer 8

l = 0, 1, 2, 3
m sub l =
0
-3, -2, -1, 0, 1, 2, 3

Question 9

how to count wavelengths on the spectrum

Answer 9

go by how many lines there are

Question 10

photoelectric effect

Answer 10

when electromagnetic radiation strikes the surface of a metal, ejecting electrons from the metal’s surface

Question 11

principal quantum number

Answer 11

(n) indicates the main energy level occupied by an electron

Question 12

angular momentum quantum number

Answer 12

(l) indicates the shape of the orbital

Question 13

magnetic quantum number

Answer 13

(m sub l) indicates the orientation of an orbital around the nucleus

Question 14

spin quantum number

Answer 14

(m sub s) indicates the two fundamental spin states of an electron in an orbital

Question 15

what did Albert Einstein propose?

Answer 15

photoelectric effect

Question 16

photoelectric effect

Answer 16

emission of electrons a from metal when light is shined on it

Question 17

Bohr’s atomic model…

Answer 17

proposes that electrons can occupy specific energy levels

explains the emission spectra of hydrogen atoms

Question 18

de Broglie

Answer 18

suggested that electrons can be considered as waves confided to the space around an atomic nucleus

Question 19

Heisenberg Uncertainty Principle states…

Answer 19

it is impossible to determine simultaneously both the position and velocity of an electron or any other particle

Question 20

the quantum theory…

Answer 20

describes mathematically the wave properties of electrons and other very small particles

Question 21

Aufbau principal

Answer 21

an electron occupies the lowest energy orbital that can receive it; electrons fill lower energy levels first before occupying higher energy levels

Question 22

Pauli exclusion principal

Answer 22

no two electrons in the same atom can have the same set of four quantum numbers

Question 23

Hund’s rule

Answer 23

orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron
all electrons in singly occupied orbitals must have the same spin state

Question 24

explain inner shells vs outer shell

Answer 24

inner shells are any fully filled levels

outer shells are any noncompleted levels

Question 25

what are the different waves from longest wavelength and lowest frequency –> shortest wavelength and highest frequency?

Answer 25

radio waves–microwaves–infrared waves–ultraviolet waves–x rays–gamma waves

Question 26

according to Einstein, what behaves like a wave and also a stream of particles?

Answer 26

electromagnetic radiation

Question 27

n=?

Answer 27

n=n^2

the amount of orbitals that can exist at a given main energy level is the energy level squared

Question 28

a particle that has an outer main energy level fully occupied by eight electrons has a ______ configuration

Answer 28

noble gas

Question 29

h (plank’s constant)

Answer 29

6.626 x 10^-34

Question 30

c (speed of light)

Answer 30

3.00 x 10^8