1. What does the azimuthal quantum number (l) determine?
A.
The shape of an orbital
B.
The energy of the nucleus
C.
The mass of an electron
D.
The number of neutrons
Correct Answer:
The shape of an orbital
Explanation:
The azimuthal quantum number determines the subshell and the shape of the orbitals in that subshell.
2. What is the azimuthal quantum number for an s subshell?
A.
0
B.
1
C.
2
D.
3
Correct Answer:
0
Explanation:
An s subshell is represented by l = 0.
3. What is the azimuthal quantum number for a p subshell?
A.
0
B.
1
C.
2
D.
3
Correct Answer:
1
Explanation:
A p subshell corresponds to the azimuthal quantum number l = 1.
4. What is the azimuthal quantum number for a d subshell?
A.
0
B.
1
C.
2
D.
4
Correct Answer:
2
Explanation:
A d subshell is identified by the azimuthal quantum number l = 2.
5. What is the azimuthal quantum number for an f subshell?
A.
1
B.
2
C.
3
D.
4
Correct Answer:
3
Explanation:
An f subshell corresponds to l = 3.
6. For a principal quantum number n = 3, which set contains all possible azimuthal quantum numbers?
A.
0, 1, 2
B.
1, 2, 3
C.
0, 1, 2, 3
D.
2, 3, 4
Correct Answer:
0, 1, 2
Explanation:
For a given n, the azimuthal quantum number can have values from 0 to n - 1. Thus, for n = 3, l = 0, 1, or 2.
7. Which subshell is represented by the azimuthal quantum number l = 2?
A.
s subshell
B.
p subshell
C.
d subshell
D.
f subshell
Correct Answer:
d subshell
Explanation:
The correspondence is l = 0 for s, l = 1 for p, l = 2 for d, and l = 3 for f.
8. Which azimuthal quantum number is not allowed when n = 2?
A.
0
B.
1
C.
2
D.
Both 0 and 1
Correct Answer:
2
Explanation:
For n = 2, l can only be 0 or 1. Therefore, l = 2 is not allowed.
9. Which subshell corresponds to l = 1?
A.
s
B.
p
C.
d
D.
f
Correct Answer:
p
Explanation:
The azimuthal quantum number l = 1 identifies the p subshell.
10. What is the highest possible azimuthal quantum number in the fourth shell, where n = 4?
A.
1
B.
2
C.
3
D.
4
Correct Answer:
3
Explanation:
The highest value of l is n - 1. For n = 4, the highest possible azimuthal quantum number is 3.
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