Name: 
 

Chapter 5 - Electrons in Atoms Formative Quiz


Matching: Value (4)
 
 
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. 

 lowest energy level
 

 3. 

 tendency of electrons to enter orbitals of lowest energy first
 

 4. 

 arrangement of electrons around atomic nucleus
 

Multiple Choice (Value 12)
Identify the choice that best completes the statement or answers the question.
 

 5. 
In Bohr's model of the atom, where are the electrons and protons located?
a.
The electrons move 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.
 

 6. 
How does the energy of an electron change when the electron moves closer to the nucleus?
a.
It decreases.
c.
It stays the same.
b.
It increases.
d.
It doubles.
 

 7. 
The principal quantum number indicates what property of an electron?
a.
position
c.
energy level
b.
speed
d.
electron cloud shape
 

 8. 
What is the shape of the 3p atomic orbital?
a.
sphere
c.
bar
b.
dumbbell
d.
two perpendicular dumbbells
 

 9. 
How many energy sublevels are in the second principal energy level?
a.
1
c.
3
b.
2
d.
4
 

 10. 
What is the maximum number of f orbitals in any single energy level in an atom?
a.
1
c.
5
b.
3
d.
7
 

 11. 
What is the maximum number of orbitals in the p sublevel?
a.
2
c.
4
b.
3
d.
5
 

 12. 
What is the maximum number of electrons in the second principal energy level?
a.
2
c.
18
b.
8
d.
32
 

 13. 
What types of atomic orbitals are in the third 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
 

 14. 
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
a.
2d
c.
3f
b.
3d
d.
4s
 

 15. 
What is the number of electrons in the outermost energy level of an oxygen atom?
a.
2
c.
6
b.
4
d.
8
 

 16. 
How does the speed of visible light compare with the speed of gamma rays, when both speeds are measured in a vacuum?
a.
The speed of visible light is greater.
b.
The speed of gamma rays is greater.
c.
The speeds are the same.
d.
No answer can be determined from the information given.
 

Short Answer (Value 2)
 

 17. 
Give the electron configuration for a neutral atom of chlorine.
 

 18. 
Give the electron configuration for a neutral atom of selenium.
 

Numeric Response (Value 2)
 

 19. 
How many electrons are in the highest occupied energy level of a neutral chlorine atom?

 

 20. 
How many electrons are in the highest occupied energy level of a neutral strontium atom?

 



 
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