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As per your syllabus, the electron-spin quantum number m_s — introduced by Uhlenbeck and Goudsmit (1925) — takes which values?
ASame as m_l
B0 or 1 only
CAny integer 0 to n
D+½ or −½ only
Answer & Solution
Correct answer: D. +½ or −½ only
As per your syllabus, m_s = +½ (↑) or −½ (↓) only.
Required to fully label each electron.
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