객관식
Which of the following sets correctly lists all possible orbitals for the principal quantum number n = 3?
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- 1. Intro to General Chemistry3h 58m
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- Magnetic Properties of Complex Ions9m
- Strong-Field vs Weak-Field Ligands6m
- Magnetic Properties of Complex Ions: Octahedral Complexes11m
9. Quantum Mechanics
Quantum Numbers: Principal Quantum Number
객관식
How many orbitals are present in the third principal energy level (n = 3) of an atom?
A
18
B
6
C
9
D
3
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검증된 단계별 안내1
Recall that the number of orbitals in a principal energy level (shell) is given by the formula \(n^2\), where \(n\) is the principal quantum number.
Identify the principal quantum number for the problem, which is \(n = 3\).
Calculate the total number of orbitals by squaring \(n\): \$3^2$.
Understand that each orbital can hold up to 2 electrons, but the question only asks for the number of orbitals, not electrons.
Conclude that the third principal energy level contains \(9\) orbitals.
