Q.

Which set of quantum numbers n,l,ml,ms is not permitted by the rules of quantum mechanics?

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a

1,0,0,12

b

2,1,1,12

c

4,3,2,12

d

3,3,1,12

answer is C.

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Detailed Solution

The  set of quantum numbers n,l,ml,ms is not permitted by the rules of quantum mechanics is 3,3,1,12.

Zero is not a possibility for the main quantum number (n). Thus, the valid range for n is 1, 2, 3, 4, Any integer from 0 to n - 1 can be used as the angular quantum number (l). For instance, l might be 0, 1, or 2.

The value of the n is 2l+1

n = 2*3+1

n=7

The value of n must be 7 for the possible set of quantum numbers

Hence 3,3,1,12 is not the permitted set of quantum number.

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