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What are the two permitted values of the spin magnetic quantum number of an electron?
A0 and +1
B−1 and +1
C+1/2 and −1/2
D+2 and −2
Answer & Solution
Correct answer: C. +1/2 and −1/2
An electron has spin s = 1/2, so ms is either +1/2 (spin up) or −1/2 (spin down).
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