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Question

Which of the following is not a correct set of quantum numbers for an electron in an atom?

A
n=5,l=3,ml=2,ms=12
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B
n=3,l=2,ml=3,ms=12
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C
n=2,l=1,ml=0,ms=12
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D
n=6,l=3,ml=3,ms=12
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Solution

The correct option is B n=3,l=2,ml=3,ms=12
For principal quatum number n, the possible values for azimuthal quatum numbers are 0 to n1.

Again for azimuthal quantum number l possible values for magnetic quantum numbers are l to +l

Spin quantum number can be either +12 or 12 .
So, for l=2, value of ml=2,1,0+1,+2 only. Hence b is not a legal set of quantum numbers.

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