1. In which direction is the p_x orbital oriented?
A.
Along the x-axis
B.
Along the y-axis
C.
Along the z-axis
D.
Between the x- and y-axes only
Correct Answer:
Along the x-axis
Explanation:
The p_x orbital is oriented along the x-axis. The labels p_y and p_z similarly indicate orientation along the y- and z-axes.
2. How many different orientations do the three p orbitals have in an atom?
A.
One
B.
Two
C.
Three
D.
Four
Correct Answer:
Three
Explanation:
The three p orbitals are p_x, p_y, and p_z, oriented along the x-, y-, and z-axes, respectively.
3. Which orbital is oriented along the z-axis?
A.
p_x
B.
p_y
C.
p_z
D.
s
Correct Answer:
p_z
Explanation:
The p_z orbital has its orientation along the z-axis.
4. The p_x and p_y orbitals are oriented along which axes?
A.
The x- and y-axes
B.
The y- and z-axes
C.
The x- and z-axes
D.
The same axis
Correct Answer:
The x- and y-axes
Explanation:
The p_x orbital is oriented along the x-axis, while the p_y orbital is oriented along the y-axis.
5. Which statement about the three p orbitals is correct?
A.
They have different shapes and the same orientation
B.
They have the same shape but different orientations
C.
They have different sizes but the same orientation
D.
They are all spherical
Correct Answer:
They have the same shape but different orientations
Explanation:
The p_x, p_y, and p_z orbitals have the same dumbbell shape but point in three mutually perpendicular directions.
6. Which orbital has no particular direction of orientation because it is spherical?
A.
s orbital
B.
p_x orbital
C.
p_y orbital
D.
p_z orbital
Correct Answer:
s orbital
Explanation:
An s orbital is spherical, so its electron cloud has no preferred direction or orientation in space.
7. The p_x, p_y, and p_z orbitals are oriented in directions that are:
A.
Parallel to one another
B.
Mutually perpendicular
C.
Curved around one another
D.
Located only in one plane
Correct Answer:
Mutually perpendicular
Explanation:
The three p orbitals point along the x-, y-, and z-axes, which are mutually perpendicular directions.
8. Which pair of orbitals represents two different orientations of the p subshell?
A.
1s and 2s
B.
p_x and p_y
C.
2s and p_z
D.
1s and p_x
Correct Answer:
p_x and p_y
Explanation:
p_x and p_y are orbitals of the same p subshell with different orientations along the x- and y-axes.
9. In a p_x orbital, the electron probability is mainly distributed along the:
A.
x-axis
B.
y-axis
C.
z-axis
D.
All three axes equally as a single line
Correct Answer:
x-axis
Explanation:
The p_x orbital has two lobes directed along the x-axis, so its orientation is associated with that axis.
10. Which set correctly lists the orientations of the p orbitals?
A.
p_x along x, p_y along y, p_z along z
B.
p_x along y, p_y along z, p_z along x
C.
All three p orbitals along the x-axis
D.
p_x and p_y along z, while p_z is spherical
Correct Answer:
p_x along x, p_y along y, p_z along z
Explanation:
The subscripts identify the axes along which the p orbitals are oriented: p_x along x, p_y along y, and p_z along z.
Short questions are currently unavailable for this page.