Unit Four

Question 1

Electromagnetic radiation is a kind of —- that acts as —-

Answer 1

Energy

Wave

Question 2

One type of electromagnetic radiation is

Answer 2

Light

Question 3

The lowest allowable energy state of an atom is

Answer 3

Ground state

Question 4

Bohrs model of an atom predicted the — of the lines in hydrogens atomic emission spectrum

Answer 4

Frequency

Question 5

Smaller electron orbit— energy level
Larger electrons orbit—
Energy level

Answer 5

Lower

Higher

Question 6

How did bohrs model fail

Answer 6

Failed to explain the atomic emission spectrum for elements other than hydrogen

Question 7

What makes up for bohrs model

Answer 7

Quantum numbers

Question 8

Complete atomic symbol

Answer 8

Two numbers on left side, letter symbol, and then charge

Question 9

Mass number

Answer 9

Proton and neutron

Question 10

Average atomic mass unit

Answer 10

G/mole

Question 11

How do we experience the energy released when an electron goes down a level

Answer 11

We see it, colors!

Question 12

What three principles help us place electrons

Answer 12

Aufbau, Pauli exclusion, hund’s

Question 13

Cations and anions

Answer 13

Cations positive

Anions negative

Question 14

Which are for metal and non metals ( C or A)

Answer 14

Metal for C

Nonmetal for A

Question 15

Energy absorbed by electron

Answer 15

Excited state, jumps

Question 16

Energy released by electron

Answer 16

Falls down ground state

Question 17

Where is the higher energy potential

Answer 17

Farther away from the nucleus

Question 18

In ROY G BIV, where is the highest/ lowest energy

Answer 18

Lowest red, highest violet

Question 19

In ROY G BIV, where is the highest/ lowest wavelength

Answer 19

Highest red, lowest violet

Question 20

In ROY G BIV, where is the highest/ lowest frequency

Answer 20

Highest violet, lowest red

Question 21

Energy and frequency relationship

Answer 21

Directly

Question 22

Wavelength and frequency relationship

Answer 22

Inversely

Question 23

Wavelength and energy relationship

Answer 23

Inversely

Question 24

Line emission spectrum

Answer 24

Finger print lines show what photons are present

Question 25

Quantum numbers

Answer 25

``` Energy level= n Sub level (L)= S P D F (orbital type) Spin (Ms, S) ```

Question 26

How many quantum numbers

Answer 26

4

Question 27

Isotopes

Answer 27

Atoms of same element with different mass #'s

Question 28

Average atomic mass-

Answer 28

(Mass)(%)/100

Question 29

Weighted average

Answer 29

Of all isotopes of an element on periodic table

Question 30

Greater amplitude is ----- intensity

Answer 30

Greater intensity

Question 31

What did they Planck do

Answer 31

Observed emission of light from hot objects | Concluded energy is emitted in small specific amounts (quanta)

Question 32

Quanta represents

Answer 32

Photons

Question 33

Are electrons evenly spaced

Answer 33

No

Question 34

Einstein

Answer 34

Concluded light has properties of both waves and particles | Wave particle duality

Question 35

Schrödinger and wave function

Answer 35

The wave function help describes the location of the electron and it's probable location

Question 36

Where is there 90% probability of finding and electron

Answer 36

Orbital electron cloud

Question 37

N^2

Answer 37

Number of orbitals in the energy level

Question 38

S orbital

Answer 38

Electrons are found within a sphere around the nucleus | Comes in ones

Question 39

P orbital

Answer 39

Orbitals that look like dumbells or propellers | Comes in threes

Question 40

D orbitals

Answer 40

Most appear to be the combination of two p orbitals | Come in fives

Question 41

F orbitals

Answer 41

Come in sevens

Question 42

Aufbau principle

Answer 42

Electrons fill the lowest energy orbitals first (lazy tenant rule)

Question 43

Electrons spin

Answer 43

+1/2,-1/2 | Plus up, neg down

Question 44

Pauli exclusion principle

Answer 44

Each orbital can hold two electrons but have opposite spins | No two electrons in an atom can have the same four quantum mechanics

Question 45

Hunds rule

Answer 45

Within a sub level, place one electron per orbital before pairing them Urnal

Question 46

Orbital diagram

Answer 46

Boxes

Question 47

Electron longhand configuration

Answer 47

Full thing

Question 48

Electron shorthand configuration

Answer 48

Noble gases and then rest

Question 49

Complete symbol

Answer 49

Mass # Over Atomic number

Question 50

Average atomic mass formula

Answer 50

(Mass)(%)+(mass)(%) --------------------- 100