Which quantum number determines the shape of an orbital?
Answer and explanation
Correct answer: D. Azimuthal quantum number
- Step 1: The principal quantum number () defines the energy level and size of an orbital, while the magnetic quantum number () defines its spatial orientation.
- Step 2: The azimuthal quantum number (, also known as the orbital angular momentum quantum number) dictates the angular dependence of the wave function and thus determines orbital geometry ().
- Step 3: Hence, the azimuthal quantum number specifies the three-dimensional shape of the orbital.
Answer
Azimuthal quantum number.
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