Multiple Choice
Which of the following are allowed values for the angular momentum quantum number (l) when the principal quantum number (n) is 2?
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9. Quantum Mechanics
Quantum Numbers: Angular Momentum Quantum Number
Multiple Choice
How many orbitals are present in a subshell when the angular momentum quantum number l = 2?
A
3
B
7
C
2
D
5
Verified step by step guidance1
Recall that the angular momentum quantum number \( l \) defines the subshell type: \( l = 0 \) is s, \( l = 1 \) is p, \( l = 2 \) is d, and so on.
The number of orbitals in a subshell is given by the formula \( 2l + 1 \), where \( l \) is the angular momentum quantum number.
Substitute \( l = 2 \) into the formula: \( 2(2) + 1 \).
Calculate the expression to find the number of orbitals in the subshell.
Interpret the result as the total number of orbitals present when \( l = 2 \).
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