Name ______
Electromagnetic Radiation & Electron Configuration Test Review
CHEM 1
MULTIPLE CHOICE Each of the following sentences can be completed correctly with one of the items listed below it. Choose the item and circle the letter that precedes your choice.
Some questions were taken from the website below.
1) The number of wave crests to pass a certain point in a given amount of time is called
a) amplitude
b) frequency
c) wavelength
d) speed
7) The measurement of how far one wave crest is to another is
a) electromagnetic radiation
b) caliper
c) frequency
d) wavelength
2) The dual nature of light means that light has properties of both waves &
a. particles.
b. charges.
c. electrons
d. colors.
3) The fourth principal quantum level can hold up to _____ electrons.
a. 8
b. 18
c. 28
d. 32
4) One of the rules that governs how electrons enter orbitals in atoms is
a. only one electron can occupy each orbital.
b. electrons enter the lowest energy level first.
c. they enter in pairs, before taking their own orbital.
d. they hide under your bed until you select an orbital for them.
5) How many unpaired electrons does Zirconium (40 electrons) have?
a. 0
b. 2
c. 4
d. 5
e. 6
6) According to the photoelectric effect, if the intensity (brightness) of a light is increased then the number of electrons jumping off the metal will
a) increase in number
b) increase in energy
c) decrease in number
d) experience no change
8) The emission spectra of an element is not continuous because the electron energy changes that cause the release of light
a) can take on any values
b) are very small
c) have only fixed values
d) are too large to be measured
9) For any wave, as the wavelength becomes larger, the frequency will
a) increase
b) decrease
c) does not change
d) changes unpredictably
10) When light is emitted from a heated element & passed through a prism the result is a
a) continuous spectrum
b) line spectrum
c) absorbtion spectrum
d) rainbow
11) DELETE Which group of elements all have the electron configuration of s2p4
a) alkaline metals – column 1
b) halogens – column17
c) noble gases – column18
d) oxygen group – column16
12) The maximum number of electrons that can occupy a single orbital is
a) 2
b) 6
c) 8
d) 18
13) As an electron moves away from the nucleus what happens to its energy?
a. It decreases
b. It increases
c. It remains the same
14) How loud a sound is depends on
a. the wavelength of the sound.
b. the amplitude of the waves.
c. the pitch of the sound.
d. the medium.
15) The amount of energy in a photon of light is proportional to the
a. medium through which it travels.
b. shape of the light wave it creates.
c. speed of the corresponding light wave.
d. frequency of the corresponding light wave.
16) Which type of electromagnetic waves has slightly longer wavelengths than red light?
a. yellow light
c. ultraviolet light
b. infrared light
d. green light
17) Which type of electromagnetic waves has the highest frequency?
a. gamma rays
c. infrared
b. ultraviolet light
d. microwaves
18) Which type of electromagnetic radiation is used to kill cancer cells?
a. microwaves
c. ultraviolet rays
b. gamma rays
d. sunlight
19) An orange looks orange because it
a. reflects orange light and absorbs other colors.
b. absorbs orange light and reflects other colors.
c. reflects red and yellow light only.
d. absorbs red and yellow light only.
20) You look at a red tulip, with green leaves, under green light. What would you see?
a. a green flower with green leaves
c. a yellow flower with black leaves
b. a black flower with green leaves
d. a black flower with black leaves
21) The color that an object appears to be depends on the
a. angle at which visible light is reflected off the object.
b. use of additive rather than subtractive colors.
c. wavelengths of light that the object reflects.
d. speed with which visible light reaches it.
22) The difference between visible light and X rays is that
a. the amplitude of visible light is greater.
c. they travel through a different medium.
b. the speed of X rays is greater.
d. the frequency of X rays is greater.
23) The color of light is determined by ____ of the light waves.
a. the medium
c. the frequency
b. the speed
d. the amplitude
24) Which type of electromagnetic wave has the greatest wavelength?
a. visible light
c. radio waves
b. microwaves
d. X rays
26) Identify the element that corresponds to the following electron configuration: [Kr]5s24d105p1.
a. Y
b. In
c. Sb
d. Ga
e. Al
27) In the lead atom, which of the following orbitals has the lowest energy?
a. 5s
b. 3p
c. 3d
d. 5d
e. 4p
28) Which one of the following subshells contains only one orbital?
a. 5d
b. 6f
c. 4s
d. 3d
29) What is the lowest-numbered principal shell (energy level) in which d orbitals are found?
a. 1
b. 2
c. 3
d. 4
e. 5
30) Identify the element that corresponds to the following electron configuration: [Ar]4s23d104p4.
a. Se
b. S
c. Ge
d. Cr
e. Br
31) How many electrons can occupy a 5f subshell?
a. 10
b. 12
c. 14
d. 8
e. 6
32) What is the maximum number of electrons that can occupy a 3d subshell?
a. 1
b. 2
c. 3
d. 5
e. 6
f. 10
33) An atom in the ground state
a. has all electrons in the n = 1 orbital.
b. is finely divided.
c. will not absorb electromagnetic radiation of any wavelength.
d. has all electrons in the lowest-energy orbits possible.
34) Of the following regions of the electromagnetic spectrum, which one has the shortest wavelength?
a. X-rays
b. radio waves
c. microwaves
d. gamma rays
e. ultraviolet radiation
f. infrared radiation
35) Is energy emitted or absorbed when an electron moves from the 3rd to the 6th energy level?
a. emitted
b. absorbed
36) As the number of protons increases in the elements as you move left to right on the periodic table, the ionization energy _____ due to a ______attractive force.
a) increases, greater
b) increases, weaker
c) decreases, greater
d) decreases, weaker
37) Electrons in a nucleus are not close to one another. This is because a larger distance between them results in a ______repulsive force.
a) higher
b) lower
c) similar
38) If the attractive force between an electron and nucleus is high the ionization energy will be
a) low
b) non-existent
c) high
d) impossible
There were no questions on Coulomb’s Law, ionization energy, the PES data or star spectra & matching line spectrums but this content will be on the test.
1b,2a,3d,4b,5b,6a (if they have enough energy) 7d,8c,9b,10b,11d,12a,13b,14b,15d,16b,17a,18b,19a,20b,21c,22d,23c,24c, 26b,27b,28c,29c,30a,31c,32f,33d,34d,35b
36a, 37 b, 38c