1. What is the azimuthal quantum number associated with a p subshell?
A.
0
B.
1
C.
2
D.
3
Correct Answer:
1
Explanation:
A p subshell is characterized by the azimuthal quantum number l = 1.
2. How many orbitals are present in a p subshell?
A.
1
B.
2
C.
3
D.
5
Correct Answer:
3
Explanation:
A p subshell contains three orbitals, commonly designated as p_x, p_y, and p_z.
3. What is the maximum number of electrons that can occupy a p subshell?
A.
2
B.
4
C.
6
D.
8
Correct Answer:
6
Explanation:
A p subshell has three orbitals, and each orbital can hold two electrons, giving a maximum of six electrons.
4. Which of the following is the first shell that can contain a p subshell?
A.
First shell
B.
Second shell
C.
Third shell
D.
Fourth shell
Correct Answer:
Second shell
Explanation:
For a p subshell, l = 1, and the principal quantum number must be greater than l. Therefore, the p subshell begins from the second shell.
5. What is the general shape of a p orbital?
A.
Spherical
B.
Dumbbell-shaped
C.
Circular ring-shaped
D.
Cubic
Correct Answer:
Dumbbell-shaped
Explanation:
Each p orbital has a dumbbell-shaped electron cloud with two lobes on opposite sides of the nucleus.
6. Which set correctly represents the three orbitals of a p subshell?
A.
p_x, p_y, p_z
B.
s_x, s_y, s_z
C.
d_x, d_y, d_z
D.
p_s, p_d, p_f
Correct Answer:
p_x, p_y, p_z
Explanation:
The three p orbitals are oriented along the x-, y-, and z-axes and are represented as p_x, p_y, and p_z.
7. What are the possible values of the magnetic quantum number for a p subshell?
A.
0 only
B.
-1, 0, +1
C.
-2, -1, 0, +1, +2
D.
1, 2, 3
Correct Answer:
-1, 0, +1
Explanation:
For a p subshell, l = 1, so the magnetic quantum number can have values from -1 to +1: -1, 0, and +1.
8. How many p orbitals are occupied in a p subshell containing three electrons according to Hund's rule?
A.
One
B.
Two
C.
Three
D.
Six
Correct Answer:
Three
Explanation:
According to Hund's rule, three electrons occupy the three degenerate p orbitals singly before pairing begins.
9. Which electronic notation represents a completely filled p subshell?
A.
p^1
B.
p^2
C.
p^5
D.
p^6
Correct Answer:
p^6
Explanation:
A p subshell is completely filled when all three p orbitals contain two electrons each, giving p^6.
10. The three orbitals in a p subshell have the same energy in an isolated atom. What are these orbitals called?
A.
Paired orbitals
B.
Degenerate orbitals
C.
Core orbitals
D.
Hybrid orbitals
Correct Answer:
Degenerate orbitals
Explanation:
Orbitals having the same energy are called degenerate orbitals. The three p orbitals are degenerate in an isolated atom.
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