SCH 4U Unit 1 Structure and Properties
Name: ____________________________
Date: _____________________________
Quantum Number Worksheet
1. What does Quantum mean? How does this relate to electrons?
2. Draw the shapes of the different types of orbitals:
s
p
d
3. What are the four quantum numbers called?
4. Which quantum number determines the type of orbital shape?
5. For n=3, what are the possible values of l?
6. For l=2, what are the possible values of ml?
7. Give the numerical values of n and l corresponding to each of the following designations:
a) 3p
b) 2s
c) 4d
8. Give the values for n, l, and ml, for each orbital in the 3p subshell.
SCH 4U Unit 1 Structure and Properties
Name: ____________________________
Date: _____________________________
9. Which of the following represent impossible combinations of n and l:
a) 1p
b) 4s
c) 5d
d) 2d
10. a) List the four quantum numbers for each electron in a N atom:
b) List the four quantum numbers for the valence electrons in Ca.
SCH 4U Unit 1 Structure and Properties
Name: ____________________________
Date: _____________________________
Quantum Number Worksheet - ANSWERS
1. What does Quantum mean? How does this relate to electrons?
Quantum means that electrons exist in specific energy levels. This means that electrons must be
in a particular energy level and can never be between energy levels.
2. Draw the shapes of the different types of orbitals:
s
p
d
3. What are the four quantum numbers called?
Principal, Angular Momentum, Magnetic and Spin Quantum number
4. Which quantum number determines the type of orbital shape?
The “l” orbital determines shape
5. For n=3, what are the possible values of l?
l = 2, 1, and 0
6. For l=2, what are the possible values of ml?
ml = +2, +1, 0, -1, and -2
7. Give the numerical values of n and l corresponding to each of the following designations:
a) 3p n = 3, l = 1
b) 2s
n = 2, l = 0
c) 4d n = 4, l = 2
8. Give the values for n, l, and ml, for each orbital in the 3p subshell.
SCH 4U Unit 1 Structure and Properties
Name: ____________________________
Date: _____________________________
n = 3, l = 1, ml = +1, 0, -1
9. Which of the following represent impossible combinations of n and l:
a) 1p Impossible: n = 1, l ≠ 1
b) 4s
Possible
c) 5d Possible
d) 2d Impossible: n = 2, l ≠ 2
10. a) List the four quantum numbers for each electron in a N atom:
7 electrons = 7 sets of quantum numbers
n = 1, l = 0, ml = 0, ms = +1
n = 1, l = 0, ml = 0, ms = -1
n = 2, l = 0, ml = 0, ms = +1
n = 2, l = 0, ml = 0, ms = -1
n = 2, l = 1, ml = -1, ms = +1
n = 2, l = 1, ml = 0, ms = +1
n = 2, l = 0, ml = +1, ms = +1
b) List the four quantum numbers for the valence electrons in Ca.
Ca has 2 valence electrons in the 4s subshell = 2 sets of quantum numbers
n = 4, l = 0, ml = 0, ms = +1
n = 4, l = 0, ml = 0, ms = -1