Download Electrons in atoms practice test File

Name:
Date:
Block:
Matching (12 points)
Match each item with the correct statement below.
a. atomic orbital
d. ground state
b. aufbau principle
e. Pauli exclusion principle
c. electron configuration
f. Heisenberg uncertainty principle
____
____
____
____
____
____
1. region of high probability of finding an electron
2. states the impossibility of knowing both velocity and position of a moving particle at the
same time
3. lowest energy level
4. tendency of electrons to enter orbitals of lowest energy first
5. arrangement of electrons around atomic nucleus
6. each orbital has at most two electrons
Multiple Choice (42 points)
Identify the letter of the choice that best completes the statement or answers the question.
____
____
7. In Bohr's model of the atom, where are the electrons and protons located?
a. The electrons move in orbit around the protons, which are at the center of the
atom.
b. The electrons and protons move throughout the atom.
c. The electrons occupy fixed positions around the protons, which are at the center of
the atom.
d. The electrons and protons are located throughout the atom, but they are not free to
move.
8. The principal quantum number indicates what property of an electron?
a. position
c. energy level
b. speed
d. electron cloud shape
____ 9. How many energy sublevels are in the second principal energy level?
a. 1
c. 3
b. 2
d. 4
____ 10. When an electron moves from a lower to a higher energy level, the electron ____.
a. always doubles its energy
b. absorbs a continuously variable amount of energy
c. absorbs a quantum of energy
d. moves closer to the nucleus
____ 11. The letter "s" in the symbol 4s2 indicates the ____.
a. spin of an electron
c. principle energy level
b. orbital shape
d. speed of an electron
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Date:
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____ 12. If three electrons are available to fill three empty 2p atomic orbitals, how will the
electrons be distributed in the three orbitals?
a. one electron in each orbital
b. two electrons in one orbital, one in another, none in the third
c. three in one orbital, none in the other two
d. Three electrons cannot fill three empty 2p atomic orbitals.
____ 13. Which color of visible light has the shortest wavelength?
a. yellow
c. blue
b. green
d. violet
____ 14. Which of the following electromagnetic waves have the highest frequencies?
a. ultraviolet light waves
c. microwaves
b. X-rays
d. gamma rays
____ 15. Emission of light from an atom occurs when an electron ____.
a. drops from a higher to a lower energy level
b. jumps from a lower to a higher energy level
c. moves within its atomic orbital
d. falls into the nucleus
____ 16. The quantum mechanical model of the atom ____.
a. defines the exact path of an electron around the nucleus
b. was proposed by Niels Bohr
c. involves the probability of finding an electron in a certain position
d. has many analogies in the visible world
____ 17. Which of the following elements is in the same period as phosphorus?
a. carbon
b. nitrogen
c. magnesium
d. oxygen
____ 18. The modern periodic table is arranged in order of increasing atomic ____.
a. mass
c. number
b. charge
d. radius
____ 19. Who arranged the elements according to atomic mass and used the arrangement to predict
the properties of missing elements?
a. Henry Moseley
c. John Dalton
b. Antoine Lavoisier
d. Dmitri Mendeleev
____ 20. Which of the following categories includes the majority of the elements?
a. metalloids
c. metals
b. liquids
d. nonmetals
____ 21. Of the elements Pt, V, Li, and Kr, which is a nonmetal?
a. Pt
c. Li
b. V
d. Kr
Name:
Date:
Block:
____ 22. To what category of elements does an element belong if it is stable and unreactive with
other elements?
a. Transition Metals
c. Halogen Group
b. Noble gases
d. Rare Earth Metals
____ 23. Which subatomic particle plays the greatest part in determining the properties of an
element?
a. proton
c. neutron
b. electron
d. none of the above
____ 24. Which of the following elements is a transition metal?
a. cesium
c. tellurium
b. copper
d. tin
____ 25. What is the maximum number of f orbitals in any single energy level in an atom?
a. 1
c. 5
b. 3
d. 7
____ 26. What is the maximum number of electrons in the first principal energy level?
a. 2
c. 18
b. 8
d. 32
____ 27. What types of atomic orbitals are in the fourth principal energy level?
a. s and p only
c. s, p, and d only
b. p and d only
d. s, p, d, and f
Short Answer (21 points)
28. Write the electron configuration for a neutral atom of carbon? (3 points)
29. Write the electron orbital diagram for a neutral atom of carbon? (3 points)
30. Write the electron configuration for a neutral atom of krypton or Kr (you may use
shorthand). (3 points)
Name:
Date:
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31. What element is represented by an electron configuration of [Rn]7s25f 12 ? (3 points)
32. A photon has an energy of 1.10 x 10-13 J. What is the photon’s wavelength? What type
of electromagnetic radiation is this?
Bonus Question (5 points)
What is the composition of Iron Man’s mechanical suit (Hint: it is not iron)?
Name:
Date:
Block:
Organizing the Elements
Answer Section
MULTIPLE CHOICE
1. ANS:
OBJ:
2. ANS:
3. ANS:
4. ANS:
5. ANS:
6. ANS:
7. ANS:
8. ANS:
OBJ:
9. ANS:
10. ANS:
11. ANS:
12. ANS:
OBJ:
13. ANS:
14. ANS:
B
6.1.1
A
C
D
C
D
C
A
6.2.1
A
B
B
D
5.1.3
B
C
DIF: L1
REF: p. 162, p. 163
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
L2
L2
L1
L1
L2
L3
L1
REF:
REF:
REF:
REF:
REF:
REF:
REF:
p. 157
p. 157
p. 156
p. 158
p. 158
p. 160
p. 162, p. 163
DIF:
DIF:
DIF:
DIF:
L2
L2
L1
L2
REF:
REF:
REF:
REF:
p. 164
OBJ: 6.2.2
p. 164
OBJ: 6.2.2
p. 166
OBJ: 6.2.3
p. 131, p. 132
DIF: L3
DIF: L2
REF: p. 132
REF: p. 131
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
6.1.1
6.1.1
6.1.2
6.1.3
6.1.3
6.1.3
OBJ: 5.1.3
OBJ: 5.2.1
SHORT ANSWER
15. ANS:
1s 2s
DIF: L1
REF: p. 133, p. 134
16. ANS:
1s 2s 2p 3s 3p 3d 4s 4p
OBJ: 5.2.1
DIF: L2
REF: p. 133, p. 134
17. ANS:
1s 2s 2p 3s 3p 3d 4s
OBJ: 5.2.1
DIF: L3
REF: p. 134, p. 135, p. 136
OBJ: 5.2.2