Multiple Choice
Which element has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^2?
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10. Periodic Properties of the Elements
The Electron Configuration
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Which of the following statements correctly describes p orbitals?
A
p orbitals can be found in the first energy level (n = 1).
B
There are three p orbitals in each set, oriented along the x, y, and z axes.
C
p orbitals have a dumbbell-shaped electron density.
D
Each principal energy level contains exactly one p orbital.
Verified step by step guidance1
Recall the definition and characteristics of p orbitals in atomic structure: p orbitals are a type of atomic orbital with specific shapes and orientations.
Understand the principal energy levels (n): p orbitals first appear at the second energy level (n = 2), so they cannot be found in the first energy level (n = 1).
Recognize the number and orientation of p orbitals: each set of p orbitals contains three orbitals, oriented along the x, y, and z axes, which are mutually perpendicular.
Identify the shape of p orbitals: p orbitals have a characteristic dumbbell shape, representing regions of high electron probability density.
Note that each principal energy level from n = 2 onward contains three p orbitals, not just one, so the statement about exactly one p orbital per energy level is incorrect.
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