Question
Download Solution PDFWhat is the number of values that an electron spin quantum number has?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is two.
CONCEPT:
- Spin quantum number: The spin quantum number describes the angular momentum and direction of the spin of an electron in the orbital.
- Each orbital can will hold two electrons. The two electrons will have +1/2 and -1/2 spin.
- The electrons tend to fill the orbitals before they pair up.
- Hence, the first electron filled in the orbital will have a spin of +1/2. The electrons start pairing up once all the orbitals are half-filled by one electron each.
- The second electron to fill the orbital will have a spin of -1/2.
EXPLANATION:
- The spin quantum number is used to determine the orientation of the spin of the electron i.e. either a spin up or spin down.
- This orientation is referred to with +1/2 for a spin up and -1/2 for spin down.
- Hence, an electron spin quantum number can have only two values.
Last updated on Jul 4, 2025
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