Chapter 4: Electron Configurations

Question 1

What is the characteristic of an electromagnetic wave that is associated with the energy of radiation?

Answer 1

Frequency

Question 2

Which has the greatest energy?

• infrared
• green light
• ultraviolet
• blue light

Answer 2

Ultraviolet

Question 3

Which if the following will give rise to a spectrum most different from the other three?

• sunlight
• moonlight
• red fireworks
• white fireworks

Answer 3

Red fireworks

Question 4

What are “pieces” of energy known as

Answer 4

Quanta

Question 5

the lowest sub level in each principle energy level is represented by the symbol…?

Answer 5

S

Question 6

Which electron transition results in the emission of energy?

Answer 6

3p to 3s

Question 7

What is the ground state electron configuration of a magnesium atom?

Answer 7

1s^2 2s^2 2p^6 3s^2

Question 8

Which is the ground stare electron configuration of titanium atom?

Answer 8

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^2

Question 9

T/F the longer the wavelength of light, the higher its frequency

Answer 9

False, Lower

Question 10

T/F the greater the frequency of light, the higher the energy of its photons

Answer 10

True

Question 11

T/F The shape of a typical p orbital is similar to a four leaf clover

Answer 11

False, dumbbell

Question 12

T/F The electron configuration of an atom gives the distribution of electrons in the ground state

Answer 12

True

Question 13

T/F the energy of an atom in a excited state is less than its energy in the ground state

Answer 13

False, more

Question 14

T/F Compared to a 2p orbital, a 3p orbital can contain 2 more electrons

Answer 14

False, contains same amount

Question 15

T/F The second principle energy level of an atom can hold a total of 10 electrons

Answer 15

False, 8

Question 16

What is the continuous Spectrum? Give an example of sources of continuous spectra.

Answer 16

When roygbiv colors fad into each other depending on the image and colors in pulls.
Ex: rainbow and a light dimmer

Question 17

What is the photoelectric effect? how does it support the particle nature of light ?

Answer 17

Photoelectric effect: electrons are ejected from the surface of the metal when light shines on metal

Question 18

Out of these 4 radiation options which one is not a part of the electromagnetic spectrum?

• microwave
• X-ray
• beta Ray
• infrared

Answer 18

Beta ray

Question 19

How many electrons can a 2p orbital hold?

Answer 19

6

Question 20

If an atom has four electrons in the ground state, how many electrons will be located in each orbital?

Answer 20

2 electrons in the 2 orbitals

Question 21

What is an orbit?

Answer 21

Electrons orbiting the nucleus

Question 22

What is an orbital?

Answer 22

Region around the nucleus where the most electrons can be found

Question 23

What is a line spectrum? What are some ways it’s produced?

Answer 23

Line spectrum: is a series of bright lines with a frequency of light by energizing elements. One way it’s produced is by an intense flame

Question 24

What is the next one number of electrons that can go into 2s?

Answer 24

2

Question 25

What is the next one number of electrons that can go into 5s?

Answer 25

2

Question 26

What is the next one number of electrons that can go into 3p?

Answer 26

6

Question 27

What is the next one number of electrons that can go into 4d?

Answer 27

10

Question 28

What is the next one number of electrons that can go into 4f?

Answer 28

14

Question 29

What is the next one number of electrons that can go into 4p?

Answer 29

6

Question 30

What is the next one number of electrons that can go into 5f?

Answer 30

14

Question 31

What is an excited state of an atom?

Answer 31

A higher energy level and electrons are further away from the nucleus

Question 32

What is a ground state of an atom?

Answer 32

The lowest energy level

Question 33

What are the three rules that govern the filling of atomic orbitals by electrons?

Answer 33

1) the Aufbau (build-up) principle,
2) the Pauli exclusion principle,
3) Hund’s rule