Question

Which of the following sets of quantum numbers n,1,m is not allowed for the electron in an atom of hydrogen? Select one: O a.
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Answer #1

If n is the principal quantam number then value of l ( azimuthal number ) will ne l = n-1

And values of magnetic quantam number will be - l to +l .

So all three a , b and c are allowed sets but in part d value of n and l are same . The values of l must be n-1 so quantam sets of 2,2 -1 is not allowed set

Ai obtion dis correct.

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