Question

The quantum number which determines the shape of the subshell is:

• A. Principal quantum number
• B. Magnetic quantum number
• C. Azimuthal quantum number
• D. Spin quantum number
• E. Principal and magnetic quantum number

Hint:

The azimuthal quantum number \( l \) defines the shape of orbitals in a subshell, while the principal quantum number \( n \) defines their energy level.

Answer 1

The Correct Option is C

Step 1: The azimuthal quantum number \( l \) determines the shape of the subshell. 
Step 2: For example, \( l = 0 \) corresponds to an \( s \)-orbital (spherical), \( l = 1 \) corresponds to a \( p \)-orbital (dumbbell-shaped), and so on.
Step 3: Thus, the shape of the subshell is determined by the azimuthal quantum number.