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Given m = 2l + 1, when l = 2, m equals 5, so the possible values of m are -2, -1, 0, +1, and +2. Which value cannot be assigned to m for l = 2?

1. -3
2. -2
3. -1
4. 0

Correct answer: -3

Solution

The magnetic quantum number (m) ranges from -l to +l, including 0. For l = 2, m can only take values -2, -1, 0, +1, +2. Hence, -3 is not a valid value for m.

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