Question
Consider the following sets of quantum numbers:
| n | l | m | s | |
| i) | 3 | 0 | 0 | +1/2 |
| ii) | 2 | 2 | 1 | +1/2 |
| iii) | 4 | 3 | -2 | -1/2 |
| iv) | 1 | 0 | -1 | -1/2 |
| v) | 3 | 2 | 3 | +1/2 |
Which of the following sets of quantum number is not possible?
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ii, iii and iv
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i, ii, iii and iv
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ii, iv and v
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i and iii
Solution
C.
ii, iv and v
The value of l varies from 0 to n-i and the value of m varies from -l to +l through zero.
the value of 's' 
Which signifies the spin of the electron. The correct sets of quantum number are following:
| n | l | m | s | |
| ii) | 2 | 1 | 1 | +1/2 |
| iv | 1 | 0 | 0 | -1/2 |
| v) | 3 | 2 | 2 | +1/2 |
