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CGP EDU Academic Team
Published on: September 12, 2026
Who discovered spin quantum number
Text Solution
Verified by ExpertsThe correct answer is:
A
The concept of the spin quantum number was introduced by two physicists, George Uhlenbeck and Samuel Goudsmit, in 1925. They proposed that electrons possess an intrinsic form of angular momentum, which contributes to the quantum state of electrons in an atom. This intrinsic angular momentum is what we refer to as 'spin,' and it is characterized by the spin quantum number, which can have values of +1/2 or -1/2 for electrons.
Therefore, the correct option is A: Unlenbeck and Goudsmit.
Therefore, the correct option is A: Unlenbeck and Goudsmit.
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